I am a junior high school student, and I want to work in Jiaozuo during the summer vacation. 15 years old

Too young, son. But it's good to have this idea of exercising yourself. Many regular jobs may be reluctant to accept minors in order to avoid legal responsibility, but you can go to cram school to see if there are leaflets or supermarket promotions. You can set up your own city on the market and find the corresponding work phone number in the recruitment column. The market is still relatively formal. Good luck. Finally, I hope you don't miss your homework ~