The ancients used family precepts to admonish their descendants, standardize family behavior and handle family affairs. From ancient times to the present, family precepts have been passed down from generation to generation in the form of father-son transmission and example. Ancient parents must have their own ingenious ways to educate their children. In ancient times, many parents also set an example. In fact, parents are the best teachers for children. Good parents can educate their children well.

In ancient private schools, teachers punished naughty children by slapping their palms. There is a "heart-clearing point" in their palm called Laogong point. Beating the palm with a ruler can not only warn but also clear the heart. Moreover, the ruler is also very delicate. An eight-point ruler indicates tolerance and patience for students' mistakes, and a one-foot-two-inch ruler indicates prevention and warning for angry teachers 120 points. And confinement, punishment, copying books and so on.