入乡随俗 rù xiāng suí sú

DEFINITIONS

  1. When you enter a village, follow the local customs (idiom); do as the natives do
  2. When in Rome, do as the Romans do

CHARACTERS

入 rù enter, come in(to), join
乡 xiāng country; rural; village
随 suí follow, listen to, submit to
俗 sú social customs; vulgar, unrefined