liǎng​lèi​chā​dāo

to go to great lengths for a friend

两肋插刀 兩肋插刀 liǎng​lèi​chā​dāo
to go to great lengths for a friend
literally meaning knives piercing both sides; used to describe a person who values friendship so highly that they are willing to take great risks or even sacrifice their life for a friend

Frequency

Movie subtitles
0.600 per million appears in 0% of films
Written text
0.381 per million

Sources