According to Mr. Cong, during more than 2 months of mining Chia, the actual amount of copper received back only stopped at 3 units. Currently, on the Huobi exchange, Chia is being valued at $820. This means that after 2 months and 3 billion of capital, he earned about 56 million VND. Fear of missing out on green Bitcoin The reason given by Mr. Cong is that although Chia saves electricity, it is difficult to compete with the super mines in China. Besides, the dramatic drop in the price of cryptocurrencies in the past week also increased the payback time of Chia mines. The hard drive is what determines the success or failure of Chia mining. “I invest a lot of money but I am quite vague about my income. The reason is that I fear that I will miss the opportunity to get rich like the way Bitcoin created 4 years ago. There were very few Bitcoin miners back then, I was one of the first. That’s why I have faith in Chia. But things don’t seem to be as I thought,” Cong said. According to Mr. Cong, his Chia mining system uses a 6TB HDD. Each of these hard drives costs 6.5 million VND. The number of hard drives in Mr. Cong’s mine is close to 300. Previously, the price of HDDs was only about 2-4 million VND. However, the wave of Chia mining has made the hard drive double in price. To cope with the huge write rates of Chia miners, many memory manufacturers have designed SSDs specifically for this purpose, like TeamGroup’s T-Create Expert model with a write limit of up to 12,000 TB. Amazon Web Services also recently opened a Chia mining service for the Chinese market. Hard drives increase in price, are in short supply but still have to buy more “In the game of chia mining, whoever has the most large capacity hard drives, that person has a higher chance of winning. And the winners at this point are the mining pools in China. They buy large quantities of hard drives at very high prices to gain an advantage in the market,” said Mr. Reply Zing , a representative of GearVN store confirmed the shortage of goods with large capacity drive models. However, this company’s customers, mainly individual users, have not been affected much. Hard drive prices have doubled since April because of the green Bitcoin craze. “GearVN’s customers are mainly end users and gamers, with a demand for hard drive capacity from 1 TB to 4 TB. In this segment, the price and supply are still stable,” a GearVN representative shared. This is also considered the biggest risk when participating in the “Green Bitcoin” market. According to experts, the difficulty of Chia mining is many times faster than Bitcoin. This means that mining systems must be invested with as many hard drives as possible. Previously, Bitcoin could be mined at individual scale because of the slow increase in difficulty. In the Chinese market, many traders have gathered thousands of hard drives to redistribute to Chia miners. According to ADATA, thanks to Chia, the number of SSDs sold by this company has increased 5 times in the past month. The shortage of goods makes many manufacturers of hard drives and SSDs prioritize serving the Chinese market. Order time in other markets is 2, 3 times longer. “In the past, every time a new order was placed, the waiting time was about 4-6 weeks. Now, the waiting time must increase to 8-10 weeks, high-capacity lines can sometimes be up to 13-15 weeks. Calculated, the standby time increased 2, 3 times, “said a representative of a distributor of the Seagate hard drive brand. Despite having an advantage in power consumption, Chia has a problem with mining materials, here is the hard drive. “I have to constantly buy hard drives while the price is getting more and more expensive. Without a hard drive, we wouldn’t have a place to store the strings of codes that can form a Chia,” said Cong. Uncertain future Chia was created by Bram Cohen, the “father” of the BitTorrent peer-to-peer file transfer protocol. The company behind this currency is Chia Network, backed by investor Naval Ravikant, some well-known companies such as Andreessen Horowitz or Cypherpunk Holdings. From May 3, this currency will be publicly traded and exchanged. According to the Business Insider , Split based on PoST (proof of space and time) consensus algorithm. In it, PoS (proof of space) describes an allocated hard drive space for blockchain block storage. In other words, the “miner” Chia will reserve a certain amount of memory space on the hard drive to store blockchains. Mining is very little, but participants have to constantly buy more hard drives in order to have space to store the blockchain. They will be awarded based on the ratio of memory cells that “miners” have to store compared to the entire network, as verified by a VDF server (aka Timelord). Chia Network, the representative company, said that this currency has good security, consumes less energy than coins using the PoW (proof of work) consensus algorithm. Unlike Bitcoin, Chia has no limit on the amount of coins mined on the blockchain. Instead, the number of diggers that can be mined will change continuously depending on demand. Chia Network, the company responsible for this currency will hold 21 million Chia in order to control price fluctuations, reducing the possibility of problems. Although the future of Chia is envisioned as ideal, the coin has only been traded on a number of crypto exchanges since early May with the token XCH. At first, the price per dong has more than doubled from $700 on May 4 to $1,600. However, facing the decline of the entire cryptocurrency market, Chia also suffered a price drop. Besides, too much hard drive also makes the Chia project away from the original “green” purpose of the founders. The owner of the net shop unplugs the machine, digs coins and waits for the translation to end Due to the impact of the Covid-19 epidemic, Mr. Nguyen Minh Quan (Thu Duc City) had to close the net shop, remove the graphics card to dig coins, earn extra income waiting for the reopening of the shop.

Illustration When deciding to build, buy, sell, or rent houses, workplaces, offices, shops … the most important requirement is to paint and orient the house in accordance with the homeowner’s age. Below we introduce the method of determining the direction of the house in accordance with the homeowner’s age of Bat Trach Feng Shui. The feng shui of the homeowner is divided into 8 sectors corresponding to 8 directions, in which the age of the person corresponding to the 4 sectors in the north, south, east and southeast directions is called east quartet; The age of the person corresponding to the 4 sectors of the northwest, northeast, southwest and west directions is called west quartet. Similarly, houses in the north, south, east, and southeast directions are called east quartet; The houses in the northwest, northeast, southwest and main west directions are called west quarter trach. The people of the four destiny of the four destitute houses the east of the quartet, the western people from the four destiny of the western quarter Feng shui sutras say that “destiny and mutuality” are peaceful and prosperous. otherwise, it will decline in all aspects. Basing on each person’s year of birth and gender to t feng shui destiny follow the formula below : The host is male: Subtract the last two numbers of the year of birth from 100, divide the difference by 9, the remainder of the division is the fate of feng shui. Example: Male was born in 1972, the fate of Feng Shui is as follows: 100 – 72 = 28 28 ÷ 9 = 3 remainder 1. Number 1 is the number of the feng shui bow of the male born in 1972, ie the mosaic, the water, the north (also use the bow name to call the male feng-shui destiny of 1972 as the mosaic). The host is female: Subtract 4 from the last two numbers of the year of birth, divide the difference by 9, the remainder of the division is the fate of feng shui. Example: Female born in 1972, the fate of Feng Shui is as follows: 72 – 4 = 68 68 ÷ 9 = 7 remainder 5. Number 5 is the number of the feng-shui bow of the female student in 1972, ie the palace, the territory, the northeast direction (also using the bow name to call the feng-shui of the female student in 1972 as destiny). Note: In the above calculation, when the remainder of the division is 5, the male feng-shui palace belongs to the palace, the woman belongs to the palace. If divisible, take the number 9 as the number of feng shui signs of that age, regardless of male or female. The numbers of the 8 sectors are as follows: Number 1 is the mosaic, water, north. Number 2 is the palace of wisdom, in the territory, in the southwest direction. Number 3 is the archery, carpentry, east. Number 4 is the palace, carpentry, southeast direction. Number 6 is the arc of the metal, the northwest direction. Number 7 is the mango bow, metal, west. Number 8 is the archery, the territory, the northeast direction. Number 9 is the bow, the fire belongs to the south. Thus, after calculating by age, the numbers 1, 3, 4 or 9 belong to the four destiny; who are the numbers 2, 7, 6 or 8 of the western quadrant. Knowing which palace feng shui is an important basis for determining the appropriate home orientation. However, because the five elements, the yin and yang of the stars of the arc (direction) and the five elements of the different arcs, there are cases where the western quartet does not match with the western quartet or the east four elements do not match with the east tetrahedra. To avoid unfortunate confusion due to complicated calculation method, below we summarize and introduce the direction of each specific feng shui. Readers only need to calculate their feng shui destiny to be able to choose the right direction: The destitute (number 6) matches the directions: need, need, and need. People with mosaic (number 1) match the directions: diamond, mosaic. The destiny person (number 8) is in the following directions: Doai, Can. The destiny person (number 3) matches the directions: Ly, seismic. The destitute (number 4) matches the directions: mosaic, glass and expense. The destitute (number 9) is in the directions: Chan, ly. The destiny of wisdom (number 2) is in the following directions: Can, mango. The destitute (number 7) matches the directions: Can, smart and mango. Note, this method is also used to calculate, choose the direction of the desk, the direction of feng shui or the age of the partner in real daily life./.