1. Personnel: At least **5 people are needed * *, and the more people, the more fun.

2. Rule: Count off from 1. If you meet someone with a "5" in the number, you should drink. So, count from "1" to "5". If there are five people in the number, start with the first person who reported 5 and push back. If there are 10 people, start drinking from the first person who reports to 10. And so on.

In addition, if you have doubts about the order of performance, who drinks and how much, you can refer to other people's opinions or make clear regulations.