Problems in Li's six classes

You mean preschool? This is very superstitious in Jianghu. Unbelievable.

As a game, I can help you explain.

The number of ten days, from the first day to the tenth day, is the first day, and from eleven to twenty, is the middle day. Twenty-one to thirty nights That is, ten in the first ten days and ten in the middle. It may or may not be ten in the later period.

Counselors 369: It's the third day, the sixth day and the ninth day. Or three, six or nine. Or three, nine or six. In other words, what you measure is related to these three numbers.