Some courses in universities are chosen by students themselves, but people don't necessarily know what courses to choose. After some time, they found that they didn't like it. At this time, they can drop out of school and re-choose, but there are rules for dropping out of school in universities. Allow students to apply for withdrawal in the eighth week. After students successfully withdraw from the class in the middle term, the course selection and grades will not be recorded, and each student can only apply for withdrawing from 2 courses at most each semester. Please choose carefully. Once the application for withdrawal is completed, the course cannot be changed.