人生地不熟 - Chinese Idiom

人生地不熟

Literally means:

totally unfamiliar with the place and the people

Actually means:

be complete stranger in a place

It means one is not familiar with a place and people around him are all strangers. It figuratively means everything is new and strange to a newcomer. It implies inconvenience in a new and strange place or environment.

周围都是陌生人，对地方不熟悉。比喻初到一个地方各方面都很陌生。含有陌生的地方或环境，有很多不方便的意思。