"If a son fails to teach, it is the father's fault" is a famous saying in the "Three Character Classic". The original sentence is: "If a son does not teach, it is the father's fault. If the teacher is not strict, the teacher is lazy. If a son does not learn, it is the fault of the father." It's appropriate. If you don't learn when you are young, what will you do when you are old? It's just education, but not strict requirements, it's just lazy as a teacher. It is very inappropriate for children to refuse to study hard. If a person does not study hard when he is a child, and he neither understands the principles of life nor has knowledge when he is old, what can he accomplish?

Extended information:

The "Three Character Classic" draws on classic materials, including literature, history, philosophy, astronomy and geography, human ethics, loyalty, filial piety, justice, etc. of traditional Chinese culture, and the core ideas are It includes "benevolence, righteousness, sincerity, respect and filial piety." While reciting the "Three Character Classic", one can understand common sense, traditional Chinese studies and historical stories, as well as the principles of life and doing things contained in the stories.

The Three Character Classic inevitably contains some spiritual defects and artistic flaws, but its unique ideological value and cultural charm are still recognized by the world, and it has been regarded as a classic by Chinese people of all generations and has been continuously circulated.

Baidu Encyclopedia-"Three Character Classic"