1. Minimize operations and wait patiently for opportunities.

2. Be sure to change the bad operating habits of buying up and selling down.

3. If you have been losing money, then reduce your position, accumulate sand into a tower, and return to capital.

4. The loss of the bond fund held is not large, and then a sum of money is needed, which can be redeemed in time to avoid greater losses, and the required funds can be prepared in advance.