凿凿

tā zuì yán zhī záo záo de dì fang zài yú qí duì jūn fāng de píng lùn

他最言之凿凿的地方在于其对军方的评论。

He was most damning in his comments about the army.

záo záo yǒu jù de guān diǎn

凿凿有据的观点

well-argued opinion