[yī zhēn jiàn xiě]
pierce [get] to the truth with a single pertinent remark; draw blood with one prick; go straight [right] to the heart of the matter; hit the (right) nail on the head; make a pointed remark; penetratingly; pinpoint; put the finger on sb.'s weak spot; reveal the heart of the matter in a few words; straight from the shoulder; (be) to the point; touch sb. on the raw; touch (someone) to the quick
point out sharply
一针见血地指出