rù xiāng suí sú
When you enter a village, follow the local customs (idiom); do as the natives do
When in Rome, do as the Romans do
suí sú
according to custom
to do as local custom requires
do as the Romans do
rù jìng suí sú
When you enter a country, follow the local customs (idiom); do as the natives do
When in Rome, do as the Romans do