喺孔夫子面前賣文章 (hai2 hung2 fu1 zi2 min6 cin4 maai6 man4 zoeng1) — to show off in front of an expert, it means people who overestimate themselves in Cantonese
haiˊ²喺hungˊ²孔fuˉ¹夫ziˊ²子minˍ₆面cinˎ₄前maaiˍ₆賣manˎ₄文zoengˉ¹章简 喺孔夫子面前卖文章
Mandarin Pinyin: bei2 Kong3 fu1 zi3 mian4 qian2 mai4 wen2 zhang1
Meaning of 喺孔夫子面前賣文章
nounto show off in front of an expert, it means people who overestimate themselves