弄巧成拙

nòng qiǎo chéng zhuō

to overreach oneself

to try to be clever and end up with egg on one's face

nòng

old variant of 弄[nong4]

qiǎo

opportunely

chéng

short name for Chengdu 成都[Cheng2 du1]

zhuō

awkward