難分難捨

难分难舍
nánfēnnánshě
loath to part (idiom); emotionally close and unwilling to separate

CEDICT

情深意濃，捨不得分開。《紅樓夢．第二一回》：「一時事畢，兩個又海誓山盟，難分難捨。」也作「難解難分」。

重編國語辭典

情深意濃，捨不得分開

維基詞典

Entry Composition

1 難 nán
  1. difficult (to...)
  2. problem
  3. difficulty
  4. difficult
  5. not good
2 分 fēn
  1. to divide; to separate
  2. to distribute; to allocate
  3. to distinguish (good and bad)
  4. (bound form) branch of (an organization); sub- (as in 分局 fēnjú)
  5. fraction
  6. one tenth (of certain units)
  7. unit of length equivalent to 0.33 cm
  8. minute (unit of time)
  9. minute (angular measurement unit)
  10. a point (in sports or games)
  11. 0.01 yuan (unit of money)
3 難捨 nánshě to be difficult to give up; to be something one is loath to part with

Related entries

難捨難分 nánshěnánfēn loath to part (idiom); emotionally close and unwilling to separate
難捨難離 nánshěnánlí loath to part (idiom); emotionally close and unwilling to separate