Mining pioneer

1. The term "difficulty" comes from bitcoin, the pioneer of blockchain technology, which is used to measure the average number of operations needed to dig out a block. mining is essentially solving a puzzle. Different e-coins set different puzzles. For example, bitcoin uses SHA-256, lightcoin uses script, and Ethereum uses ethash. All the possible values of the solution of a puzzle are called the solution space. Mining is to find a solution among these possible values
these puzzles

2. In short, PI currency is an encrypted digital currency. Just like the Shang Dynasty first used shell as currency, so far there is also a Yap Island on the Pacific Ocean. The occupants of the island use stone as currency. Metal paper is the most common form of currency at present. At the same time, the function of WeChat Alipay payment transfer is universal. It represents the inevitable trend and direction of digital evolution in the future.

many people are still discussing the value of digital currency, but they ignore that the essence of currency is not value, but consensus

the foundation of consensus is Pi's founding team and strong project background

let's take a brief look at the three main founders of PI:

a white man, Nicolas. He is a postdoctoral student in computer science at Stanford University, a lecturer in blockchain at Stanford University, and a member of the blockchain Research Center at Stanford University

a yellow woman, fan, Ph.D. in computer anthropology, Stanford University, computer scientist and engineer

a black man, Vincent. Politics at Yale and business at Stanford

the three main founders cover three major races and genders in the world

research areas include computer science, anthropology, politics, and business

among them, Nicolas and Vincent are members of Stanford blockchain research center

it's millions of dollars a year to put a founder in any company in Silicon Valley

the mining threshold of PI is very low, and there is no cost. It only needs a smart phone, no need to install complex programs or plug-ins, buy expensive ASIC mining machine, and no need to contact the knowledge of cryptocurrency of key class to participate

secondly, in the promotion, Stanford University development team has always been the focus of PI community fans. It's not a grassroots entrepreneur. It's a blockchain project by a well-known Stanford University student. The subtext of PI powder propaganda gives people more sense of sureness - we're not here to make money. We're really here to change the world and reshape the financial system. We're here to realize the ideal of decentralized cryptocurrency. What is invisible to the naked eye is the attraction of pi to people like a blind box.

3. Instead of investing in virtual currency, Li Ka Shing's investment company, Victoria Harbour, has invested in bipay, an internationally renowned bitcoin payment company
South China Morning Post reported on December 27 that Li Ka Shing's Victoria Harbour investment took a stake in bitpay, which is also regarded as a way to "find another way" to dig gold from the virtual currency business
the report continued that a spokesman for bitpay said he was "deeply honored" to support investors including Victoria Harbour investment
nowadays, many international giants have accepted bitcoin payment, such as Microsoft, Dell and so on. In China, the payment function of bitcoin is not feasible, which is mostly a means of speculation. But there are also innovations. For example, Ruitai coin mainly promotes asset packaging, which is a kind of asset voucher, while Qianjin card mainly focuses on overseas luxury purchasing market.

4. SD dares to reach the glory of the pioneer is good, this game is very characteristic, can take risks, also can develop, there are hundreds of MS for players to collect, the player's strategy is not high, simple and easy to start, compared with adventure and mining fun too much.

5.

Jinshan Ranger is OK. It needs to have its own gear. It can be reced to a very slow speed. As soon as you get out of the mouse, you will be able to dig up the Shaolin Scripture

or, I'll send you a Wulin modifier, which can modify all the props, martial arts, skills, money, friends, etc

if you want, send it to someone

6. In Qiaoshan, a suburb of Guangzhou City, Chinese archaeologists found a "mine cave" more than 5000 years ago. The depth of the mine is more than 37 meters. There are large areas of burning marks on the inner wall of the mine cave, and a large number of carbon chips and burst ore blocks on the ground. After archaeologists' research, it turned out that this was a mining method in the Neolithic Age: they first heated the stone with fire, then poured water, and used the principle of "thermal expansion and cold contraction" to mine the ore. This method has been used by Chinese people since 5000 years ago. It is considered as a good way to save money and time, and it is also a pioneering work in the history of mining instry in the world<

the Shang Zhou ancient mine in Ruichang, Jiangxi Province is the first mine in the world to use advanced "wood support" for deep mining. Like modern mines, it has used the frame type "roof" safety support technology composed of "pit wood", "manufacturing", "roof beam", "column" and "hell", and solved the ventilation problem by using the height of shaft sinking. Digging tools include bronze axes, axes, chisels, etc., earth turning tools include wooden shovels, wooden shovels, etc., loading tools include bamboo baskets, stpans, etc., lifting tools include wooden windlass, hook, rope, etc., and mineral processing tools include "sectional water flushing mineral processing Wooden chute" with movable baffle, etc., which is the earliest and most advanced deep well mining technology in the world

Mining with explosives is a major feature of modern mining instry. China is a country that invented gunpowder, and its "gunpowder blasting" mining technology began in Ming Dynasty. In the world, it was not until the 19th century that it was adopted by large mines in Louisiana and Texas in the United States, more than 400 years later than China

ore prospecting is based on the symbiotic relationship of ore seedlings and minerals and the up-down relationship. During the spring and Autumn period and the Warring States period, the use of bronzes, cinnabar, mercury and iron is a concrete manifestation of the increase in the types of minerals recognized by people. It also shows that the types of minerals found by outcrops are increasing rapidly Most of the minerals recorded in the book of mountains and seas are outcrops of minerals, i.e. ore seedlings. As recorded in the book of Nanshan, the flamboyant mountain is "rich in gold and jade", and the Tangting mountain is "rich in water and jade, rich in gold". Guanzi Di Shu pian in the Warring States period recorded the use of mineral symbiosis and up-down relationship for ore prospecting, such as: "mountain, where there is ochre above, there is iron below; If there is a variant of "lead" on it, there is silver under it; On a day there is silver under it; If there is red sand on the top, there is gold under it; If there is a kind stone on it, there is copper and gold under it. This mountain is also a place of honor. " He also said, "if there is cinnabar above, there is gold below; There are Cishi above, copper and gold below; There are mausoleum stones on the top and bronze, tin and red copper on the bottom; There is ochre above and iron below. This mountain is also a place of honor. " The so-called "glory in the sight of mountains" is the outcrop of mine seedlings. Xia Xiangrong, a modern geologist, summed them up into six, which are called "Guanzi six": first, there is ochre on the mountain and iron under it; Secondly, there are magnetite on the mountain and copper and gold below it; Third, there is lead on the mountain and silver under it; Fourth, there is red sand on the mountain and gold under it; Fifth, there are mausoleum stones on the mountain and lead, tin and red copper under them; Sixth, there is silver on the mountain and Dan under it“ "Guanzi Liutiao" includes seven kinds of metal minerals, including iron, copper, tin, lead, gold, silver and mercury. It is a summary of the experience gained from prospecting and mining practice before the Western Han Dynasty

indicator plants are used for ore prospecting. In the Liang Dynasty of the northern and Southern Dynasties, there appeared a famous work of Plant prospecting, the geological mirror map The original book has been lost. Now we can only see part of its content from the quotations of later generations. Its main idea is to connect the underground deposits with the plants on the surface. It is the beginning of modern indicator plant prospecting or biogeochemical prospecting method. It is a new idea and theory with great scientific value. Of course, this new theory is graally emerging, not suddenly. Looking back, we find that Xunzi's chapter on persuasion said: "jade is in the mountain, while plants and trees are moist." it is the first time to put forward the idea that the minerals in the mountain are related to the surrounding plant ecology. Zhang Hua of Jin Dynasty also said in his "natural history" that "mountains... Where there are valleys, jade grows". By the time of "ground mirror map", the content has been greatly enriched. The book said: "in February, Mr. grass and trees drooping, under the jade.". In May, the leaves of plants and trees are green and thick without juice. In August, when the plants and branches droop, there must be jade. There are clouds. After August, the dead also have jade. In the middle of December, there is a beautiful jade under the unique branches and leaves of plants. There are green onions in the mountain, silver under it, and the light is faint and white. The stem of the grass is red and beautiful with lead under it; The straw is yellow and beautiful, and there are bronzes under it. " Duan Chengshi in Tang Dynasty 863) made a preliminary arrangement on it, saying: "there are green onions on the mountain and silver under it; There are Allium macrostemon on the mountain and gold under it; There is ginger on the mountain and copper and tin under it; There are treasures and jade in the mountain, and the branches beside the trees are drooping. " These records may not be completely consistent with the actual situation, but he pointed out that the direction of using indicator plants for prospecting is right

Joseph Needham, a British historian of science, once made a proper evaluation of the invention and development of the theory of prospecting by using indicator plants in ancient China. He said: "the observation made by the Chinese people in ancient times can indeed be said to be the pioneer of modern scientific theory and practice which is still developing rapidly and has a very wide range."

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8.

Two days ago, when I visited the post bar of fantasy God, I saw someone ask, how much is my number worth

as for "a little loophole", it refers to the home system in the game (there is a very second dimension called "Zhai"). In the "house", you can do cooking, hand letter writing or building (which will improve your "house degree"), cooking and hand letter can be sent to the source God to improve the favor. To do these things, we need materials. We need to collect the materials ourselves: we need to fish by ourselves, we need to pick the flowers by ourselves, we need to dig the soil by ourselves, and so on. That is to say, we have moved all the contents of the end tour. But how grand is the end game system? In games like EQ and Warcraft, many people can't dig enough all night, so mobile games can't do this. So the loophole here is that you can use the simulator to hang up the collection. There is no physical strength and no restriction on hanging up the machine. As long as there is room in the backpack, you can dig infinitely, so you can hang up the collection before going to bed at night, or hang up the collection at work in the evening, and so on. In other words, although it's a mobile game, part of the content has to be operated on a PC with a simulator, which is a little pity