What are the idioms and allusions about making friends in the stories of the ancients?

Guan Zhong and Bao were the most familiar people in the Spring and Autumn Period. Later, it was often compared to a friend with deep friendship.

Pronunciation: ancient m: n b à o zh and Ji ā o

Synonym group: the difference between life and death

Antonym group: a nodding acquaintance

Usage: formal; Become an object; Include praise

The origin of the idiom: Liezi Mo Lifeng: "He who gave birth to me is also Bao Shu who knows me."