fù tāng dǎo huǒ

ㄈㄨˋ ㄊㄤㄉㄠˇ ㄏㄨㄛˇ

Idiom

1fig. to brave any danger

2to go to any lengths (for a noble cause)

3lit. to jump into scalding water and plunge into raging fire (idiom)