Do in Rome as the Romans do.

入乡随俗。

youdao

An old saying goes, "When in Rome, do as the Romans do."

俗话说：“入乡随俗。”

youdao

I know you have egg and milk for breakfast at home, but now you are in another country, when in Rome, you will do as the Romans do and take coffee，please.

(我知道你在家早餐是鸡蛋和牛奶，但现在你在另一个国家，你要入乡随俗，(所以)，请喝咖啡。)

youdao

If these people wish to live in our country, then they should adopt the principle of 'doing in Rome as the Romans do'.

BBC: Your comments on Britain on the Brink