First of all: there is a problem with fund management. Open five hands at a time, and overnight orders are the most taboo. If you can open more than 100 lots of corn, then five lots are light warehouses. If you can only open 10 hands, entering a half position is a heavy position. The method of overnight order is different from short-term trading in the day. The correct way is to open a position, and if you find the right direction the day before the next day, you will add a position. Alternatively, pyramid coding method can be used.

Secondly: the way to open a position is to listen to the news, analyze and then enter the market. What is your basic trading model? Have you counted them?