Why I don't dare to mine small currencies other than BTC, because the logic of POW is usually like this:

1. The project party promotes the project, builds the enemy's plate, and allows graphics card miners to enter to help the project party to make data: miners, nodes, mining pools, total network computing power, mining difficulty, and transaction volume. 2. The manufacturer (actually the project party) launches a low-power, low-computing mining machine for sale, and recovers part of the early capital investment.

3. Use the income from the mining machine to recover the token chips sold by the miners into circulation, pull up the market dozens or hundreds of times on the exchange, and then tell a story to ship the chips to retail investors.

4. After the manufacturer ships to retail investors, according to the increase in mining difficulty, continue to produce the next high-power, higher-computing mining machine, sell it in the form of futures, and use this part of the income to continue to push up the price, serving the sales of mining machines (sometimes launching new mining machines even regardless of whether the miners who bought the mining machines in the early stage have recovered their investment)

5. Repeat steps 3 and 4 above

6. BTC is the best-performing market, LTC+DOGE is also OK, but there have been 5 or 6 major drawdowns in computing power in history, so I don’t dare to participate.