赴汤蹈火

1. • lit. to jump into scalding water and plunge into raging fire (idiom)
2. • fig. to brave any danger
3. • to go to any lengths (for a noble cause)

Character by character

• 赴(fù)go
• 汤(tāng)surname Tang
• 蹈(dǎo)tread on
• 火(huǒ)surname Huo