勾肩搭背

gōujiāndābèi
(idiom) arms around each other's shoulders

CEDICT

互相用手勾搭在對方的肩膀或背上。形容感情親密，關係深厚。

重編國語辭典

Entry Composition

1 勾 gōu
  1. to attract
  2. to arouse
  3. to tick
  4. to strike out
  5. to delineate
  6. to collude
  7. variant of 鉤 gōu, hook
2 肩 jiān
  1. shoulder
  2. to shoulder (responsibilities etc)
3 搭背 dābèi harness pad (on draft animal)