What if Hohai University doesn't choose physical education class?

Of course, places are not put in batches, they are all put at one time. If there are 100 students in a class, we will release 150 places and draw lots. If you are lucky enough to be selected, you can go, otherwise you will be transferred to other projects that are not full. In the past, we were all waiting in line to open a course selection system. As soon as we opened it, we rushed into the system to grab some interesting courses such as basketball and football. What's left is some volleyball and aerobics ... If you don't choose the course you want, you have to wait for others to choose this course before you can drop out, but this is generally impossible.