寸步不離

寸步不离
cùnbùbùlí
  1. to follow sb closely (idiom)
  2. to keep close to

CEDICT

to tag; to follow closely

Wiktionary

緊緊跟隨著，一小步也不離開。比喻關係密切，總是在一起。

重編國語辭典

Entry Composition

1 寸步 cùnbù
  1. (literally, figuratively) tiny step; inch
  2. tiny step; inch
2 不離 bùlí
  1. to be not much different from; to be about the same
  2. to not leave

Related entries

跟屁股 gēnpìgu
  1. to tag along behind
  2. to follow sb closely
貼 tiē
  1. to stick
  2. to paste
  3. to post (e.g. on a blog)
  4. to keep close to
  5. to fit snugly
  6. to subsidize
  7. allowance (e.g. money for food or housing)
  8. sticker
  9. classifier for sticking plaster: strip
貼你心。

It's close to your heart.

Source: Tatoeba