First, learning a technology, such as sticking a mobile phone film, is actually very simple, but most students can't do it well. You can do it on campus all year round.

Second, all seasonal goods are very profitable. For example, buy apples wrapped in gift paper at Christmas, or sell flowers or something.

Third, you can bring one or two mentors. From the first grade, if you learn well, you can teach him until high school. Tutoring is very precious now. And in this process, you can also review your middle school knowledge.