【入乡随俗】〖rù xing suí sú〗[Do in Rome as Rome does; A guest must do as his host does; observe the customs of the place; When in Rome, do as the Romans do]

入境必学各习惯，

乡规民约自律严。

随时度势避禁忌，

俗易风移腾凤鸾。

到一个地方，就顺从当地的习俗。Go to a place, follow local customs.同：入境问俗、因地制宜。