I don't know how to kill time, but I want to learn. It's that kind of army. I think the monitor is different for everyone. How do you play it?

Haha, I wanted to learn this question at first. Later, I taught myself, and there was no standard routine. When you are really beating time, few people are singing and watching you from the bottom. So, how do you see yourself and make others look handsome? Of course, you have to follow the rhythm of music. ....