[chuī máo qiú cī]
（比喻刻意挑剔毛病， 寻找过错） blow apart the hairs upon a fur to discover any defect -- carp; be fault-finding; blow at the hair to look for a mote; blow upon the hair trying to discover a mote; captious; cavil at; criticize unfairly; fastidious; find quarrel in a straw; hand [call] a person over the coals; hypercritical; nitpick; pick holes; pick holes in; (pick on sth. to) find fault (with); point out flaws or nail down incongruities; seek trouble with sb. as though one blew aside the hair on a beast's skin to seek for a hidden disease; split hairs (over sth.) to draw it fine; squeamish
The intensely critical spirit is often the narrow-minded and ignorant one.
极爱吹毛求疵的人往往是心胸狭窄和无知的人。