What is the idiom of mutual praise?

Playing Guanqing Pinyin: t á tán guān xiāng qìng q

Description: spring crown: bounce off the dust on the hat. It is a metaphor that when a person becomes an official, others celebrate each other, and there will be an official to do it. It is often used in a derogatory sense. The latter refers to the smug appearance of the bad guys.

Source: The Biography of Han Ji Wang by Ban Gu: "It is also a choice for Ji to be friends, and the world calls it' Wang Yang's reign, playing the crown together'.

In Song Dynasty, Su Xun commented on Guan Zhong: "If there is no bell in a day, the three sons can celebrate each other."

Wu Meicun's poem in Zhao Yi's Poems of Oubei in Qing Dynasty: "It is different to take a husband as an official to prosper the DPRK and to celebrate each other with a crown."

Usage: more formal; As a predicate; It's derogatory, referring to the way the bad guys are proud.

Example: Jiang Guangci's poem "Nostalgia Collection Nostalgia" reads: "The peasant associations are closed, and the gentry are back ~.

Synonym: one person gains the Tao, and the chicken and dog ascend to heaven to celebrate the forehand (praise)