Looking back on the past 20 years and the pitfalls I've encountered, I can't help but sigh that without paying tuition, growth is impossible. At the beginning of 2021, during the DeFi summer explosion, I was still a novice and saw DeFi projects with APY starting at 10,000%. I directly invested 20,000, naively thinking I had found a good project. Who would have thought that a week later, while the number of coins increased, the price plummeted, and the losses from mining were greater than the price drop, resulting in a tearful cut loss. After that, I was also scammed 2,000 by a game I played, 5,000 in a PK game, and 9,000 for buying so-called O3 shares. I have suffered too many losses along the way. As an experienced investor, I share with new investors:

1. For coins you are interested in, you can open contracts, but don’t use high leverage; 10x is the maximum. Use margin for full positions, and when you first start, keep it under 500 as spot holdings. Short-term trading is extremely difficult and can easily lead to losses.

2. Exposure to new things is good, but don't get too obsessed; test the waters with 100-200, and don’t go all in right away.

3. Disable all permissions on Telegram, prohibit group pulls, and private chats.

4. Find a reliable paid group; paying for knowledge is the most cost-effective investment.

5. If anyone recommends a coin to you, don’t go all in at once; enter in batches.

6. For now, that's all; I will think of more later and treat it as a "mistake collection" to update.