1, which will not be easily touched by low-level random fluctuations;

2. The loss caused by stop loss shall not exceed a certain proportion of the total account (generally not more than 2%, depending on personal psychological endurance).

3. Transaction income: risk ratio. The proportion of loss caused by stop loss is risk, and the expected profit is income. This ratio should not be less than 3. If it is lower than this ratio, you should give up the transaction.

Determine the best stop loss setting after comprehensively balancing these three principles.