What is the main connotation of traditional family instruction culture in China?

The so-called family training is the admonition of parents about parenting in the family. In the history of China, the cultural connotation of family precepts is very rich. From the Four Books and Five Classics in the Pre-Qin Dynasty to the Book of the Later Han Dynasty, from the Yan Family Instructions in the Southern Dynasties to the publication of many family instructions in the Song, Yuan, Ming and Qing Dynasties, there are a lot of quotations about family instructions, including many profound family instructions.