Third, first, we have our own trading system, which is summed up through our painstaking efforts. (When to open a position, when to add a position, when to close a position, and when to wait) The second best fund management, such as the maximum use of funds is not more than 20%, and each is not more than 5%. Third, a good attitude cannot be shaken according to your own trading system. Doing stock futures is a probabilistic event. Even the best system has probability.