Probably between 2020 and 2021 I watched a few YouTube videos and roughly learned how to use Remix IDE to issue ERC20 tokens. In fact, it's just finding some open-source contract code, copying it over, and changing parameters such as Ticker, Name, total amount, and transaction tax. It's very simple. After I learned this skill, I joined various telegraph groups. As there were many people and the lively ones, I got in touch with the administrators and project teams, and then promoted my coin sending service, charging 400u per coin. At that time, the project team was actually very naive and stupid. Many of them wanted to make plates, but they couldn't even understand how to issue coins. They didn't usually have access to people who understood technology, so I was able to make money. I took over ten orders in a few months and earned thousands of yuan, which was very satisfying for me as a college student at that time. But there was an accident once, and I don't know where I got it wrong. Anyway, after that coin was released and added liquidity, every transaction had to be given a huge amount of gas, so I couldn't play anymore. That coin was basically useless. Then the project team retaliated quickly. After receiving the coins and adding them to the pool, they immediately transferred the pool to the black hole and destroyed it. They came to scold me for making me lose money. I looked at the pool they added several thousand units of, but couldn't afford it. They were so scared that they cancelled their account and ran away.