check erroneous ideas at the outset
Fangweidujiao, a Chinese idiom, Pinyin is f á NGW ē ID ù x ì n, which means fangweidujian. It comes from reply to master Xu cunzhai.
The idiom comes from the 19th chapter of Zhang Juzheng's answer to master Xu cunzhai in Ming Dynasty: "to serve taihan, pity the unfaithful fool and loyalty, teach to guard against minor provocations, and be careful to love yourself."
check erroneous ideas at the outset
follow suit without knowing why - ǎi rén guān cháng
Take advantage of the stolen goods - bìng zhuō ná zéi