赴汤蹈火

fù tāng dǎo huǒ zài suǒ bù xī

赴汤蹈火，在所不惜

be willing to risk death to accomplish a task

wèi le nà ge nán hái fù tāng dǎo huǒ wǒ yě yuàn yì

为了那个男孩，赴汤蹈火我也愿意。

I’d go to hell and back for that boy.