have no choice but to
It's imperative. Chinese idiom, Pinyin is sh ì Z à IB ì x í ng, which means that things have to be done. From Dongpo Zhilin, Volume I.
The origin of Idioms
Su Shi's Dongpo Zhilin (Volume I) in Song Dynasty said, "if sun Wuling is the only one, it's imperative to do something, and there's no forgiveness if there's any offense."
Idiom usage
It's a predicate and an attribute. Chapter 66 of the chronicles of the states of the Eastern Zhou Dynasty: "it's imperative. How can it be predicted?"
Chinese PinYin : shì zài bì xíng
have no choice but to
enjoy cockfights and dogracing. dòu jī zǒu quǎn
commit crimes in violation of the law. zuò jiān fàn kē