发难 fā nàn

Attack in speech or writing; assail with words

Dāng tóur què shí bù róng yì, jīng jì xiào yì gǎo bù hǎo, qún zhòng jiù huì xiàng nǐ fā nàn.

当头儿确实不容易，经济效益搞不好，群众就会向你发难。

It's not very easy to be the boss of a company as you will be attacked if you don't maintain good performance.