Summer trivia:How to do a small fan without air conditioning in summer

I still remember that when I was at the university campus, when I went to class in the summer, people didn’t necessarily have books in their hands, but they all must have a small fan. I am embarrassed to use a small fan to describe it. There are battery-type, rechargeable, and charging-powered, and hand-cranked (hand-operated is not as good as buying a fan)

The little fan is going to spend the hot summer with you. You will find that when you hold a big fan, your popularity will be much better. The people around you will come over and take it. It's amazing.