literal meaning: swim through boiling water and tread on fire
translated: to go to great pains (for the sake of something)
赴
fù
swim
汤
tāng
boiling water, soup
蹈
dǎo
tread, step on
火
huǒ
fire
买辣椒也用券 - 起风了
Feng Qinyuan - Qi Feng Le
赴汤蹈火去走它一遍
Yě gānyuàn fùtāng-dǎohuǒ qù zǒu tā yībiàn
And willing to face any difficulties to reach there
In this lyric, the singer describes the youthful determination they felt earlier in their life. Being willing to "walk through fire and swim through boiling water" is a metaphor for being ready to face any difficulties without hesitation.