Weixin mining machine
The concept of bitcoin was founded by Nakamoto
On December 12, 2010, when bitcoin graally became a hot topic, he quietly left and disappeared from the Internet As a descendant of samurai, Nakamoto was born in 1949 in Beppu, Japan. His mother, quanzi, was a Buddhist and brought him up in poverty When his parents divorced in 1959, Nakamoto's mother remarried and immigrated to California with her three sons. Nakamoto and his stepfather don't get along well, but according to his younger brother Arthur, Nakamoto showed his talent in mathematics and science when he was very young, but also showed his "fickle and strange interest"Nakamoto graated from Caltech, majoring in physics. Upon graation, he joined Hughes Aircraft and worked in defense and electronic communications. Later, Nakamoto worked for the U.S. military, and his experience was classified as a state secret. Now searching his files, his life is a blank
In 2008, in an e-mail group discussing information encryption on the Internet, he published an article outlining the basic framework of the bitcoin system. In 2009, he established an open source project for the system, officially announcing the birth of bitcoin. On December 12, 2010, when bitcoin graally became the climate, he quietly left and disappeared from the Internetpublic key system: corresponds to a public key and a private key, keeps the private key in the application and publishes the public key. When Party A transmits information to Party B, it can use Party A's private key to encrypt the information, and Party B can use Party A's public key to decrypt the information, so as to ensure that the third party cannot impersonate Party A to send the information; At the same time, when Party A transmits information to Party B, it is encrypted with Party B's public key and sent to Party B, and then Party B decrypts it with his own private key, so as to ensure that the third party cannot eavesdrop on the communication between the two people. RSA is the most common public key system, but the lliptic curve digital signature algorithm is used in bitcoin protocol. What's the difference between cash and bank account? Bitcoin is an electronic currency in BTC. In this article, it is also used to refer to the whole bitcoin system. Like opening an account in a bank, the corresponding concept in bitcoin is address. Everyone can have one or more bitcoin addresses, which are used to pay and collect money. Each address is a string that starts with 1. For example, I have two bitcoin accounts, and. A bitcoin account is uniquely determined by a pair of public key and private key. To save the account, you only need to save the private key file. Unlike bank accounts, banks keep all transaction records and maintain the book balance of each account, while bitcoin's transaction records are jointly maintained by the whole P2P network through a pre agreed protocol. How much money is in my account address? Although the current account balance can be seen by bitcoin software, unlike banks, there is no place to maintain the book balance of each address. It can only calculate the account balance in real time through all historical transactions. How do I pay? When I pay from address a to address B of the other party, the payment amount is e. at this time, both parties will announce the transaction information to each network node, telling address a to pay to address B, and the payment amount is e. In order to prevent the third party from forging the transaction information, the transaction information will be encrypted with the private key of address A. at this time, the network node receiving the transaction information can use the public key of address a to verify that the transaction information is indeed sent by address a. Of course, trading software will help us do these things, we just need to input the relevant parameters in the software. What will the network node do after receiving the transaction information? This is the most important part of the bitcoin system, which needs to be elaborated. For the sake of simplicity, only bitcoin protocol has been implemented. In the current version, each network node will save all transaction information synchronously. There are two kinds of transaction information in history, one is & quot; Verified & quot; The transaction information, that is, the verified transaction information, is stored in a series of "blocks". Each & quot; block" Is the previous & quot; bock" The ID of each block is the hash code of the hash code of the block and the new transaction information (see an actual block). The other category refers to those who also & quot; Unverified & quot; The transaction information just paid above belongs to this category. When a network node receives new unverified transaction information (possibly more than one), it can calculate the book balance of each address at that time because the node keeps all the transaction information in history, so it can calculate whether the transaction information is valid, that is, whether there is enough balance in the payment account. After eliminating the invalid transaction information, it first takes out the last & quot; block" Then, the unverified transaction information is combined with the ID, and a verification code is added to form a new "block". It needs a lot of calculation to build a new block, because it needs to calculate the verification code, so that the above combination becomes a block, that is, the first several bits of the hash code of the block are 1. At present, the first 13 bits need to be 1 (generally, the specific method is uncertain), which means that if the block is generated by enumeration method, the average number of enumerations is 16 ^ 13. Using CPU resources to generate a block is called "gold mining", because the proction of the block will get a certain reward, and the reward information has been included in the block. When a network node generates a new block, it will broadcast to other network nodes. However, this network block may not be accepted by the network, because it is possible that other network nodes have proced the block earlier. Only the earliest block or the block with the largest number of subsequent blocks is valid, and the remaining blocks are no longer used as the initial blocks of the next block. How does the other party confirm that the payment is successful? When the payment information is distributed to the network node, the network node begins to calculate whether the transaction is valid (that is, whether the account balance is enough to pay), and attempts to generate blocks containing the transaction information. When six blocks (one direct block and five subsequent blocks) contain the transaction information, the transaction information is considered "verified", so that the transaction is formally confirmed, and the other party can confirm the successful payment. A possible problem is that I will pay the balance of address a to address B, and at the same time pay to address C. If I only verify that the single comparison transaction is valid. At this point, my way of cheating is to generate six blocks including B to B and six blocks including C to C before the truth is revealed. Because I need a very long CPU time to generate a block, compared with the whole network, the probability of my cheating success is very small. What is the motivation of network nodes to proce blocks? As can be seen from the above description, in order to make the transaction information effective, the network node needs to generate 1 and 5 subsequent blocks to contain the transaction information, and such block generation is very CPU intensive. How to let other network nodes help to proce blocks as soon as possible? The answer is very simple. The agreement stipulates that BTC will be rewarded for the address where the block is proced, as well as the Commission promised by both parties. At present, the reward for procing a block is 50btc, which will be halved every four years in the future. For example, the reward will be 25btc from 2013 to 2016. Is the transaction anonymous? Yes, and No. All bitcoin transactions are visible. We can check all transaction records of each account, such as mine. But what's different from the banking monetary system is that everyone's account itself is anonymous, and everyone can open many accounts. In general, anonymity is not as good as it claims. But bitcoin has another advantage in doing black market trading: it can't be frozen. Even if the police trace a bitcoin address, there is nothing they can do unless they trace the computer used by the exchange based on the Internet address. How to ensure that bitcoin does not depreciate? Generally speaking, in the case of equivalent trading activities, the value of money is inversely proportional to the amount of money issued. Unlike the traditional money market, the central bank can determine the amount of money issued. Bitcoin does not have a central issuing institution. Only by procing blocks can we get a certain amount of BTC currency. Therefore, bitcoin's new amount of money depends on: 1. The speed of procing blocks: bitcoin's agreement stipulates that the difficulty of procing blocks is fixed at an average of 2016 every two weeks, about 10 minutes. Moore's law of doubling CPU speed every 18 months will not speed up the proction of block. 2. The number of rewards for block proction: at present, 50 BTC is awarded for each block proced, which is halved every four years. In 2013, 25 BTC is awarded, and in 2017, 12.5 BTC is awarded. Considering the above two factors, bitcoin's currency issuing speed is not controlled by any single node in the network. Its protocol makes the currency stock known in advance, and the maximum stock is only 21 million BTC
in 2016, we moved the headquarters of the foundation to Geneva to provide comprehensive capacity-building for young leaders who are interested in environmental protection and entrepreneurship through "project funding", "institutional funding" and "green Ambassador Program for college students", to support environmental protection, ecate and appeal to the public to support and participate in the improvement of social environment together with people from all walks of life, Jointly explore the future direction of environmental protection development, and strive to build a green earth
in 2017, we launched a digital currency project based on blockchain Technology: Green entrepreneurship coin. The issuing rate of green entrepreneurship coin is reced by half every five years according to the equal ratio sequence, and the total amount is about 8 billion. The number of one green entrepreneurship coin per capita in the world can be popularized more quickly and realize global circulation, Let the value and function of digital currency truly reflect
in the face of increasingly serious environmental pollution and shortage of natural resources, the world environmental entrepreneurship foundation promises to provide more opportunities for young people and enterprises who care about and love the environment and are willing to start their own businesses, so as to promote the orderly development of the world with practical actions
mission and vision
we believe that positive action will bring about change
we present the environmental entrepreneurship projects we support to the public to enhance the awareness and understanding of the whole society in a positive way
We support executable environmental entrepreneurship projects
in promoting the project, we will fully respect democracy and seek solutions that are fair to different regions and classes in the world<
mission
the world environmental entrepreneurship foundation is committed to supporting the development of the world environmental protection instry by sponsoring environmental entrepreneurship projects, so as to promote the sustainable solution of world environmental problems. Since its establishment, the foundation has provided comprehensive capacity-building for young leaders who are interested in environmental protection and entrepreneurship through "project funding", "institutional funding" and "green Ambassador Program for college students"; Environmental publicity has been carried out in many colleges and universities in China to fund the environmental protection actions of youth teams
objective
in the face of increasingly serious environmental pollution and shortage of natural resources, the world environmental entrepreneurship foundation, in line with the vision and mission of environmental protection, promises to support environmental protection with people from all walks of life and take practical actions to promote the orderly development of the world. The foundation will vigorously support and promote various environmental entrepreneurship projects, ecate and appeal to the public to support and participate in the improvement of social environment, jointly explore the direction of future environmental development, and strive to build a green earth.
The wealth myth of "one coin, one villa" is still widely spread in the currency circle, and new investors are eager to try. But in fact, a stable power structure has been formed in this small circle, from mining machinery manufacturers to large mine owners, and then to mining pools
manufacturing and selling mining machines, mining, building mines and building ore pools, the "mining circle" has become another way to get rich in the blockchain world, and mining machines have also become a little-known "big business"
according to the imagination of Nakamoto, the inventor of bitcoin, the ideal state should be "decentralized", with computing power scattered all over the world. However, contrary to decentralization, the mine pool is absolutely centralized, and more and more mining machines are connected to the mine pool
this article was first published in the Southern Weekend
"if speculation is a road of no return, then investment in mining machinery is a business that can make a steady profit without loss, and it is only a matter of time before the cost is recovered." Zhong Xi, general manager of Shenzhen Aibo times Technology Co., Ltd., calculated an account. A miner earns 200 yuan a day, which can be recovered in 120 days, and then the profit
in October 2017, in addition to his main business, Zhong Xi joined the mining army and quickly became a big boss in the mining circle. He operated many large mines in Jiangxi, Sichuan, Guizhou and other places
in fact, the business of "steady profit without loss" still depends on the continuous rise of currency price. In the past two months, the price of bitcoin has dropped from US $15000 to about US $10000, or even below US $6000 at one time, which has extended the cycle of mining machinery return. If it keeps falling, the profit will be far away
in 2012, four years after the advent of bitcoin, mass-proced mining machines appeared. Before that, mining was mainly a private activity, which could be completed by a home computer“ At that time, the home computer was the money printing machine, and a lot of bitcoin could be g up every day. " Huang Shiliang, a senior digital currency player who sold mining machines in his early years, recalled to Southern Weekend reporters
after the emergence of mining machine, mining began to be "socialized", with the emergence of mines and pools, and mining became a collective work. The indivial miner is entrusted by the mine, just like the workers on the proction line, as long as they are there, they can get paid every day
manufacturing and selling mining machines, mining, building mines and building ore pools, the "mining circle" has become another way to get rich in the blockchain world, and mining machines have also become a little-known "big business"
China has become the world's largest procer of mining machinery. Since 2012, a number of miner manufacturers have been born in China, such as Shenzhen bitquan Co., Ltd., which proces cat roasting miner, bitmainland, Jianan Yun and Yibang communication, which are now famous. In Huaqiangbei, Shenzhen, foreigners can be seen everywhere asking about the price of mining machinery with translators
recently, in an interview with the media, the CEO of bitcontinental, Mr. Zhan Ketun, said that this startup company, which has been established for only four years, had a revenue of about US $2.5 billion in 2017. Bitcontinent is known as the world's largest miner, whose ant miner has always been the hard currency of the coin circle and miner world
just like the coin circle, the mining circle also needs belief that the mechanical mathematical operation of mining machines every day can create great wealth
However, contrary to the "decentralization" advocated by bitcoin, the miner's world is moving towards "centralization". Miner dealers build their own mines. After the investors buy the miner, they are entrusted by the seller; The procers build their own mines and manage themthis process of "centralization" made the wealth of the mining circle snatched by a few people, and it was not easy for Zhong Xi to enter the core circle
calculation force "centralization"
the main function of the mine is to provide a place for scattered mining machines to operate. But it is the "ore pool" that really plays the role of integration
the so-called "mine pool" can be simply understood as "cooperative mining". The miners and the mines give the calculation power to the mine pool, and the mine pool is used as the only address to access the digital currency network for mining, and then distribute dividends to the miners according to the calculation power of the mining machine
the history of ore pool is longer than that of mining machine. In November 2010, the mine pool named slush appeared. Today, its official website says "the world's first mine pool", which is also recognized by the coin circle. Compared with the mine, the construction of the mine pool needs certain technology, and the threshold is relatively higher
the person in charge of a well-known domestic mine pool explained the principle of the mine pool to the Southern Weekend reporter. He compares mining to buying lottery tickets. If you dig alone, the probability of winning the lottery is very unstable. You may win 100000 today, but you won't in the next six months
"gather the people who buy lottery tickets together and buy them in a unified way. No matter who wins, they will be divided according to the proportion of money they pay. In the coin circle, the mine pool plays this role. " The person in charge said
it's not complicated to connect the mining machine with the ore pool. According to the operation guidelines of the major ore pools, it can be completed in a few steps, and then according to the calculation power provided by ourselves, we can get benefits from the ore pool. The miner is like a worker standing on the proction line, receiving a fixed salary every day
the mine pool with huge computing power and many mining machines has an absolute say in the coin circle and the mining circle. For example, if you want to issue a new digital currency or dominate the bitcoin bifurcation, you generally need to get the support of the mine pool. Without the support of the mine pool, no one will dig the new currency, so it is meaningless
in addition, when a hot new coin comes out, the mine pool can also use its own miners to pack it quickly and take the lead in the rush purchase of these new coins
in June 2017, when SNT and EOS were issued, Southern Weekend reporters witnessed the scene of minchi snapping up tokens. Because there are too many investors, many indivial investors can not put their funds into the designated position, but the person in charge of a mine pool can easily complete this operation
according to the imagination of Nakamoto, the inventor of bitcoin, the ideal state should be "decentralized", with computing power scattered all over the world. However, contrary to decentralization, the mine pool is absolutely centralized, and more and more mining machines are connected to the mine pool
on January 18, 2018, Emin Yun silash, a computer professor at Cornell University, and other five people co authored a paper pointing out that there is an implicit power structure behind bitcoin and Ethereum, the two major digital currencies, and mining is too centralized, in which 50% of bitcoin's computing power is controlled by the four major mines
In fact, this problem has always existed. Four years ago, the founder of Ethereum, vtalik, noticed this problem when he wrote Ethereum white paper. He wrote: "this problem can be said to be very serious. At the time of writing this article, the two largest mines indirectly controlled about 50% of the computing power of the whole network." Up to now, this problem has not been solved. An early translator of the Ethereum white paper told the Southern Weekend reporter, "this is not a technical problem, but a human problem."5
recessive power structure
in the mining circle, the top of the food chain is mining machinery manufacturers. At present, the three recognized mining machinery manufacturers are located in China. Through the proction and sales of mining machines, they get a lot of profits. At the same time, they also set foot in the construction of mines and pools, and have the right to speak in the whole coin circle
ant mining pool is one of the top two large mining pools in the world, and its computing power accounts for 17% of the total network computing power. However, according to instrial and commercial data, it was founded by bitmainland; Several investors of Jianan Yun are also investors of Hangzhou mining Pool Technology Co., Ltd., which has its own mining pool hash and mining platform, but the mining pool has ceased operation at the end of 2017
Yibang communications has set up three blockchain companies in Hohhot, Wuhai and Zhundong Economic Development Zone in Inner Mongolia. A salesperson of Yibang communications told reporters at Nanfang Weekend that they have mines and mining businesses in these three places, but these mines have been operating at full capacity, and there is no machine space to host new mining machines"we are building a new mine in Irkutsk, Russia, where electricity charges are much lower and new mining machines can be hosted there." The source said
above the mining machinery manufacturers, it is the harvest of chip giants“ The core technology of mining machinery lies in the chip. Whoever has the chip can proce more mining machinery. " Ding Yang told reporters at Nanfang Weekend that the chips are mainly in the hands of several giant manufacturers, such as TSMC, NVIDIA, AMD, etc
since 2015, TSMC has always been the largest chip supplier of Jianan Yun. In 2015, the chips purchased by Jianan Yun from TSMC accounted for 69.62% of all the chips purchased by Jianan Yun. Since then, this figure has been maintained at about 60%. Most of the profits of Jia Nan Yun Zhi were made by TSMC
On January 18, 2018, at the presentation meeting of TSMC's fourth quarter financial report, chairman Zhang Zhongmou said that although the mobile business prospect this year is weak, the company's revenue will still grow by 10% - 15%. One of the key factors is the demand for chips e to the continuous and steady development of cryptocurrencyunder the mining machinery manufacturers, there is another power structure. Jianan Yun disclosed this secret in its 2017 prospectus. In the first four months of 2017, four of the top five customers of Jianan Yun were "indivials". According to public information, three of them are well-known "wrists" in the currency circle
Wu Gang, the largest customer, was the first group of miners, and later founded haobtc, which has one of the world's top ten mines; Lin Zhipeng, the second largest customer, is the founder of Xiaoqiang mining machinery. He has been engaged in the proction and sales of mining machinery for a long time. He has been cooperating with Xie Weiqin, the sixth largest customer; Wang Jin, the third largest customer, founded bitbang, a coin circle information websitethese big customers are not simple miners, they all have their own influence in the coin circle. Mechanical operation of the mining machine to bring them income at the same time, also brought the right to speak
according to an insider in bitmainland, most of the big customers in bitmainland are big guys in the currency circle. However, bitmainland officials declined an interview with the Southern Weekend reporter. The company's Public Relations Department responded that it was not convenient to disclose the content because it signed a confidentiality agreement with its customers
"one coin, one villa" wealth myth is still widely spread in the currency circle, and new investors are eager to try. But in fact, a stable power structure has been formed in this small circle, from mining machinery manufacturers to large mine owners, and then to mining pools
most of the new entrants can only make the harvested "leeks"
On June 22, 2020, sponsored by golden finance, hosted by node consulting, ipfs100.com, and jointly sponsored by Mackay storage, the "interstellar roaming Guide - IPFs technology and Application Seminar forum" opened in Shenzhen. On the forum, Hou Feng, founder of McKee storage, gave a speech with the theme of "distributed storage revolution in the era of big data"
in his speech, he said that you may think too complicated about a series of mining activities such as filecoin. In fact, the simplest logic of mining is to have a device, and then connect with the official mining software to realize it. The configuration of the mining machine is easy to figure out, and the mining machine itself is a storage server
as for how to identify a powerful mining machinery company, he mentioned that it depends on whether the company has an actual proction plant
the following is the full content of the speech:
Hou Feng: Thank you, host, distinguished friends and colleagues. Good morning, I'm the founder of McKee storage, my name is Hou Feng. First of all, thank our sponsor Golden Finance for providing us with such a good platform for communication. Today, I am very excited to see more and more people join IPFs and filecoin. Today, we will have a good exchange and have a good look at what we can do in this ecology
I often say: there are people who are inferior to others. When we see the development of an instry and the coming of wealth opportunities, we don't know how to get wealth, what can we do? We will come out and have a look at what we are doing, and then we will learn how to earn our own wealth
today, I'd like to give you a brief introction of McKee storage. I have about 20 minutes, from the company's profile to the mining revenue to the team's presentation. Shenzhen Mack Storage Technology Co., Ltd. has been preaching IPFs since 2017. We have been in this instry for many years. From 2018, we formally established our operation and maintenance team, and then went to study filecoin. We are a company integrating design, R & D, proction, sales, centralized management, mine pool development, and IDC machine room construction, So we don't just do one thing, such as technology or sales of machines. We also invested 600 million yuan to build a server proction plant in Jiangxi, with 162 million yuan in the first phase
this is a passage I like very much. Today I would like to share with you, "don't understand business as making money. In fact, the original intention of business is to share. Life is endless. It means the heart. This is the way of business and the right way.". This is a mine pool app that we are developing now. In fact, I shared it with you in a live broadcast on our mine pool PC in April. In the future, we will have our mining income, dividends and purchases in this mine pool app
In fact, what I really want to say today is that mining is very simple. What I understand as mining is that you provide services to others and then get some benefits from themit's such a simple thing. You may think that a series of mining activities such as filecoin are very complicated. In fact, mining is to have a device, and then connect with the official mining software. So in this device, especially in Shenzhen, Shenzhen is the distribution center of some of our electronic procts, So many of our little friends don't have to worry about the configuration of the mining machine. Today, I can tell you very frankly that the mining machine is our storage server, just a few hardware
today, I really want to give you an estimate of how much money we make by digging filecoin. This is what I saw one day in 2018, when the futures reached 227 yuan. I said, is this our good day finally coming? But it seems that it only took one day to go up and then it came down
this is a picture I cut two days ago. It's 71 yuan. Based on the average price of the two of them, it's 149 yuan. We estimate the profit of about 4 million yuan this time. If we have 50000 or 60000 sets of equipment, we can calculate the total computing power. Our single T computing power calculated by the total computing power is 0.15 to 0.45. If we calculate according to its average value, it is about 0.3 yuan per T. the price of our server is 1950 yuan / T. our single T computing power is until your machine is scrapped
so Mack has been saving 1950 yuan and has been telling you that you can dig for at least one year, and the rest of the time we will dig until the machine is scrapped. Why? Because I often argue that if I'm good, if I'm not, I won't do it; I'm in favor, but he's not. I always use altruistic thinking and want to do something when filecoin comes
therefore, our company has been digging up the machine for 1950 yuan / t until it is scrapped. If we calculate according to the cost of 10t bought by all of you, the cost is 19500 yuan, and our daily income is 448 yuan. Our monthly income is 13450 yuan, and our annual income is more than 160000 yuan. Our payback time is 43 days. In fact, I have been calculating this thing, just to give you an estimated income, but this one is also very strict. It is calculated by some data, not by me. What if the value of filecoin increases 10 times, 100 times, 1000 times? Now let's calculate by 149. What if it goes up to 1490? What if you buy 100t? What about 10000 tons? We just need to believe, because believing is the beginning of all greatness, and only believing can do it
if you buy our server, you will have the following rights and interests: the first is to have the promotion right of Mack storage, give priority to the computer, and get the earliest head mine bonus, the main network
1. It is related to parents' underestimation of children's ability
for example, the average level of a child is that he will "welcome" and "goodbye" at nine months old, cover himself at one year old, take off his socks at three months old, and so on. When the child is two years old, he will begin to like to take shoes, table and broom for his parents. When the child takes doing housework as a very happy thing, our parents think that he is making trouble, not giving support and guidance, but drinking and scolding or putting things away. Let children feel that their ability is too weak, their ability can not be recognized by alts.
2. It is related to the children's way of doing things from childhood
for example, when a child wrestles, our parents usually don't help him summarize and recognize the reasons for wrestling, encourage and support him to try again, but often remind him loudly: & quot; Did you forget that you fell there& quot; The implication is that you dare to go even if you have fallen there. I don't know how to be afraid! And such a kind of reminder forms that children don't know how to face the behavior pattern when they encounter difficulties, and that children focus all their attention on "difficulties" when they encounter difficulties, rather than thinking about how to solve them
3. It is related to parents' failure to help their children accumulate experience in facing difficulties
any behavior pattern and ability of a child needs our parents to accumulate relevant experience for him. Based on the above two reasons, our parents help their children to accumulate the experience of giving up when they encounter difficulties, instead of helping them to accumulate the experience of meeting difficulties, facing difficulties and solving difficulties, so they "always ask others to help."
after understanding the reasons behind children's behavior, please pay attention to the following points in your daily life:
1. Be an encourager and supporter of children
when your child asks you to solve the problem, you will study and analyze the problem with him, then work with him to solve the problem, and tell the child afterwards what you have done well in what you have just done, and encourage and praise him. And tell him: & quot; You believe he will do better and better next time& quot;<
2. Be a cheerleading team to help children build self-confidence.
give children more opportunities to do things for us. And in the side for his encouragement, refueling, and timely guidance, so that he can successfully complete, so as to enhance his self-confidence
3
we will not be the "magnifier" and "intimidator" of children's difficulties. We need to be difficult "analysts" and "focus shifters"! In other words, when children encounter difficulties, what we should do is: let children focus on how to solve the problems, that is, what methods can solve the problems, not the difficulties themselves. For example: climbing up and falling down, go with him to see why I fell down just now? Is it hand or foot?... After finding out the reason, encourage him to try again and tell him that you will support and protect him. Come on
in this way, we help children establish an achievement mechanism that they are willing to face when they encounter difficulties - I can! I'm great! I will do! In this way, our children will have this kind of thinking mode to think and seek solutions when they encounter difficulties, and become a confident and brave child!