show off in the presence of an expert
Nong ax ban men, a Chinese idiom, Pinyin is n ò NGF ǔ B ā nm é n, which means dancing ax in front of Lu Ban men. This is a metaphor for showing off one's ability in front of experts. It comes from the preface to Wang Bozhong's singing poems.
Idiom explanation
Ban refers to Lu Ban, an ancient craftsman. Playing with axes in front of Luban's door. This is a metaphor for showing off one's ability in front of experts.
The origin of Idioms
Liu Zongyuan's preface to Wang's Bozhong's poems of singing harmony in Tang Dynasty said: "when you wield an axe at the gate of ban and Ying, you can see that Si Qiangyan's ear is strong. Ouyang Xiu of the Song Dynasty wrote in his book Yu Shu with Mei Sheng: "there were seven or eight poems in Zhending yesterday, but now they are recorded. It's ridiculous to be a teacher."
Idiom usage
Let's not laugh. Let's not laugh. (Ji Nong, jade hairpin by Gao Lian in Ming Dynasty)
show off in the presence of an expert
the mighty river flows eastward - dà jiāng dōng qù
Listen to what you say and watch what you do - tīng qí yán ér guān qí xíng
to live in complacency on barely sufficient or insecure means - tōu ān dàn xī