1.
You must never do anything that violates the law and discipline. Of course, the premise is to understand the law.
2.
Money-related matters should be treated with caution. Personally, I think all expenses exceeding 100 yuan should be reported to parents. Try not to borrow money casually or lend it to others (especially if the amount is relatively large or the frequency is relatively high).
3.
Pay attention to etiquette when contacting students of the opposite sex, and avoid too close physical contact, especially in public.
4.
Pay attention to manners and manners at all times.