In our strategy, the rules for position management are: First, do not operate with a full position, and always keep a certain proportion of reserve funds. Second, buy and sell in batches to reduce risks, dilute costs, and amplify profits. The advantage of buying in batches downwards and selling in batches upwards is that you have a lower average price than others and higher profits. Third, when the market is weak, you should hold a light position. Fourth, as the market changes, you should make corresponding position adjustments and increase or decrease positions appropriately.