lit. to fall behind Sun Shan 孫山|孙山[Sun1 Shan1] (who came last in the imperial examination) (idiom) / fig. to fail an exam / to fall behind (in a competition)
有眼不识泰山
yǒu yǎn bù shí Tài Shān
lit. to have eyes but fail to recognize Mt Tai (idiom) / fig. to fail to recognize sb important or sb's great talent / to be blind to the fact
打嘴
dǎ zuǐ
to slap sb's face / to slap one's own face / fig. to fail to live up to a boast
大水冲了龙王庙
dà shuǐ chōng le Lóng Wáng miào
lit. surging waters flooded the Dragon King temple (idiom) / fig. to fail to recognize a familiar person / a dispute between close people who fail to recognize each other