1. When the quantity indicator sends a clear sell signal, a stop loss strategy should be used.

2. When the technical form shows a breaking trend, a stop loss strategy should be used.

3. Investors entering the stock market at the peak of a bull market should use stop loss strategies.

4. When the overall trend of the market is running downwards, investors need to assess the size of the downward potential of the overall index and individual stocks in the future, and use this as a reference for whether to stop losses. For stocks with large downward potential in the future, they should resolutely stop losses. Especially for some stocks that were popular in the early stages and had huge gains.

5. Investors with excessive positions or those who are fully hedged should appropriately cut losses on some stocks.

6. When the loss reaches a certain level, a stop loss strategy should be used.