八拜之交

Explanation: Eight worship: the children of the original audience with the elders of an ancient family friend of manners; Attn: friendship. The relationship between old friends became brothers. 　　Usage: Partial official; as attribute; refers to as brothers and sisters sworn 　　Source: Yuan Wang Shih-fu, "The West Chamber" first off the first: "and niche Tongjun students, was originally Babaizhijiao." 　　Examples: ~ Front became saints today, share bliss, a horse with the riding. (Ching Lee Green Park "Qiludeng" Volume XX) Thesaurus:  Sworn brothers and sisters The good, 8 Thanks for the cross