不分彼此
búfēnbǐcǐ
=
不分
+
彼此
Idiom, Proverb or Saying: make no distinction between one`s own and sb. else`s/share everything/be on very intimate terms
eg.
2CH18#3
⇐
不分彼此búfēnbǐcǐ = 不分 + 彼此