jī dàn li tiāo gǔ tou
to look for bones in an egg
to find fault; to nitpick (idiom)
鸡
jī
variant of 雞|鸡[ji1]
蛋
dàn
variant of 蜑[Dan4]
里
li
li, ancient measure of length, approx. 500 m
挑
tiāo
to carry on a shoulder pole
骨
gǔ
bone
头
tou
suffix for nouns