hai2 hung2 fu1 zi2 min6 cin4 maai6 man4 zoeng1喺孔夫子面前賣文章喺孔夫子面前卖文章

Jyutpinghai2 hung2 fu1 zi2 min6 cin4 maai6 man4 zoeng1
Yalehái húng fū jí mihn chìhn maaih màhn jēung

Definition

To show off one's modest skills or knowledge in front of an expert.

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How it's used

This idiom is a classic example of a chengyu that is used to mock someone for their arrogance or lack of self-awareness. It specifically targets those who attempt to demonstrate knowledge or skill to someone who is clearly far more experienced or qualified than they are. It carries a strong sense of irony and is often used as a warning to keep one's ego in check.

Examples

Are you really not afraid of being laughed at for showing off in front of an expert?
He has been in this industry for years; showing off in front of him will only bring shame upon yourself.

Common phrases

to bring shame upon oneself
to overestimate one's own abilities

Common mistake

Learners often mistake this for a simple description of teaching, but it is strictly derogatory. It should never be used to describe a genuine attempt to learn from a master, as it implies the speaker is foolishly trying to outshine the expert.

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