Combining the experiences and insights gained from 9 years of cryptocurrency trading, here are some conclusions for your reference:

1. 60% main position, long-term investment in bear and bull cycles. The first year after halving is suitable for holding mainly BTC, while later it is suitable for ETH. Currently, you can consider allocating ETH and SOL with leverage below 3x; any other investment logic may not withstand the test of time. At present, only Ethereum and SOL are the most certain.

2. Various long-term positions in old coins, VC coins, and sector coins offer no cost-performance ratio. It is better to switch to leading coins in major sectors.

3. Currently, holding long-term low-leverage positions in ETH and SOL, any other assets may ultimately underperform, with a lower winning rate.

4. If engaging in short-term speculation, aiming for high returns with small investments, various old coins, VC coins, leading coins, and sector coins have no cost-performance ratio. It is better to look for strong meme coins; whether on-chain hundreds of millions to tens of millions, or all the way from hundreds of millions to tens of billions, the explosive power and comprehensive odds of popular leading meme coins are much better than those of previous old altcoins.

Although most people do not like to heavily invest in SOL and ETH, those who make a lot of money in the cryptocurrency space are basically holding BTC, ETH, and SOL as their main positions. This aligns with common investment knowledge and reflects the current state of the industry and past trends.