1, bitter fleabane bitter fleabane bitter fleabane, not straight; White sand is nirvana, and it is black.

Said by: Xunzi, Warring States Period, exhorting to learn. Pennisetum grows in hemp fields and can stand upright without support. White sand will not turn white when mixed into black soil.

It is a metaphor for living in a good environment and getting healthy growth.

2. Live with kindness. If you enter Lan Zhi's room and don't smell it for a long time, you will be integrated with it.

From: Six Books of Confucius' Family Words by Confucius disciples during the Warring States Period.

Associating with people with good character is like entering a room full of herbs. The fragrance of herbs persists for a long time, because it blends with the fragrance. Associating with people with bad conduct is like entering a shop selling smelly salted fish. Over time, you can't smell the salty fish, which is also because you are integrated with the smell.

3. people are divided into groups

From: Liu Xiang in the Western Han Dynasty, Warring States Policy, Qi Ce San, Zhouyi, Cohesion.

Used to describe similar things often get together, like-minded people get together, and vice versa, is a general term for like-minded friends.

4. a gentleman must choose his neighbor when he is born, and he must show his talents when he does.

From: Yan Zi Za Shang Chun Qiu compiled according to historical materials and folklore.

A gentleman should choose a good living environment and moral people when making friends.

5, squatting and darkening, natural.

From: Yan Zhitui's Family Instructions of Yan Family, Mu Xian of Song Dynasty.

People's thoughts, personalities and habits have changed invisibly because of various factors.