To err in vain
This is a Chinese idiom. Pinyin is w ǎ NGK ā nx ū zh ā o, which means extorting a confession by torture.
Idiom usage as predicate, object, attribute; used for extorting a confession example in all kinds of cases can not make false moves.
Chinese PinYin : wǎng kān xū zhāo
To err in vain
Drinking Valley and perching Hill. yǐn gǔ qī qiū
avoid the strong and bully the weak. tǔ gāng rú róu