After experiencing three rounds of bull and bear markets, I have summarized some important investment principles for everyone's reference:

1. **Secrets of the Bull Market**: During a bull market, when prices drop, be bold in increasing your position, but make sure to control your exposure to avoid losses caused by blindly following the crowd.

2. **Selling Strategy**: In the later stages of a bull market, try to keep your long-term positions and only sell without buying, locking in profits while avoiding catching the falling knife at high levels.

3. **Capital is King**: Always prioritize your capital; controlling risk is key. Without a solid foundation, no matter how large the gains, they are merely a mirage.

4. **Wealth Accumulation**: It's almost impossible to become rich overnight; the growth of wealth is a gradual accumulation process. Being eager for quick success will only lead to harm.

5. **Contrarian Thinking**: Boldly buy when the market is overlooked, and decisively sell when everyone rushes in. By doing this, your investments will be more successful. In the world of investing, patience and strategy are equally important. May we all find our rhythm between bulls and bears and move forward steadily!