【搜根剔齿】〖su gn t ch〗[search minutely for sb.'s smallest fault; very particular in one's choice]

搜整卷宗毛病挑，

根株附丽势倾朝。

剔蝎撩蜂莫须有，

齿剑如归非刑拷。

比喻故意挑毛病、找岔子。Metaphor deliberately pick fault, find fork. 同：寻根究底。