These four sentences are classic sayings in ancient China culture. They are not only the essence of culture, but also the guide to life. Below, let's discuss the realm contained in these four sentences.

♂? Introspection introspection.

"A gentleman is learned. If he cares about himself every day, he will know it but not make mistakes." This sentence tells us that only by constantly reflecting on ourselves can we achieve the unity of knowing and doing and not make mistakes.

Teach truth, teach research.

"Teacher, so preach and teach." This sentence tells us that a good teacher should not only impart knowledge, but also guide students and help them solve problems.

♀? Yuan Hang zai

"The ship is far away, and the wind is blowing clothes." This sentence tells us that life is like a boat. Only by sailing freely can we reach the other shore.

Natural Sui Xin

"The clouds come out of the hole unintentionally, and the birds are tired of flying." This sentence tells us that everything in nature has its own laws, so we should conform to nature and our hearts.