School starts in September 14. It's on the school calendar. Go to Baidu and search the school calendar of Sun Yat-sen University. You can find ~ ~ ~

If the leave is postponed, ask the counselor and the teacher in charge of student work for leave, but generally those who need to report a few days before school starts, especially freshmen, it is best not to ask for leave ~ ~

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.