In China, the word "teaching" originated from Mencius wholeheartedly: "A gentleman has three pleasures, but the king of the world does not exist. Parents exist, brothers have no chance, and they are happy; Yang is worthy of the sky, regardless of people, but also happy; If you are educated by talents in the world, you will have three pleasures. "

Therefore, Xu Shen explained in Shuo Wen Jie Zi, "Teach, apply, and effect." . Education, just adopt a son. The main idea is: "The teaching of education means that parents will demonstrate (guide) their children to imitate you and learn from you", but you can't demonstrate casually, because you have to "raise your son well", and you have to let him do good things and do good things to be considered education.