入乡随俗

nǐ yào dǒng de rù xiāng suí sú ā

你要懂得入乡随俗啊。

You should know that when in Rome, do as Romans do.

tā yǐ jīng rù xiāng suí sú le

他已经入乡随俗了。

He has gone native.

jì rán yǐ jīng lái le jiù rù xiāng suí sú ba

既然已经来了，就入乡随俗吧。

Since we are already here, let's follow the customs.