入鄉隨鄉

入鄉隨鄉，你要學會適應當地的文化。

When in Rome, do as the Romans do - you need to learn to adapt to the local culture.

既然來到這裡，就要入鄉隨鄉。

Since you're here, you should do as the locals do.

入鄉隨鄉是旅行的基本禮貌。

Adapting to local customs is basic travel etiquette.