How to describe the idiom that brother and sister have a good relationship?

new word

Basic explanation

As close as lips and teeth. Metaphor is closely related and interdependent.

commendatory sense

tidy

Liu Hanxin proposed: "Give it to others; Still as close as lips and teeth. "

example sentence

1. China and Japan are separated only by a strip of water.

Approximate antonym

synonym

Differences are related to the death of lips and cold teeth, the collapse of nests and the destruction of eggs.

antonym

No, no, no, no.