积习成俗 jī xí chéng sú

DEFINITIONS

  1. accumulated habits become custom

CHARACTERS

积 jī
HSK 4
accumulate, store up, amass
习 xí
HSK 1
practice; flapping wings
成 chéng
HSK 3
completed, finished, fixed
俗 sú
HSK 5
social customs; vulgar, unrefined