If you purchase goods, you can make progress on Taobao or Alibaba. Although things don't make money, the cost is low, small profits are quick turnover, but the premise is that you must have a basic aesthetic vision, otherwise a large number of unsalable goods are rotten goods.
If you really don't have a basic aesthetic vision, then open a game shop and buy some game software and peripherals, including handles and next-generation consoles. There are also online game cards, which are mass-sold products and can also sell mobile phone recharge cards.
If you don't know much about games, open a bookstore. Books in the university library can't satisfy everyone's hobbies. In the professor's sleepy lectures, many students have the habit of bringing their own extracurricular books. Many of these books are popular reading materials, such as online novels, comics, and the series of Lecture Room, which was very popular in previous years. Nowadays, books are becoming more and more exquisite, and many people won't buy them, so borrowing books is very popular in our university. I think we can open a shop to sell books and rent books, or we can collect textbooks from the first grade and sell them to the next grade. Because universities are no better than primary schools, not every student will finish reading without textbooks, and professors themselves don't like to use books and textbooks, preferring to make ppt by themselves, resulting in a large number of textbooks that are brand-new and discarded, but they must have textbooks. Therefore, it is very popular in our university to resell textbooks, but everyone is unwilling to find a buyer to buy two books, so most of them are transferred from bookstores, which can basically earn about 30% of the book price, and the business is very good.