He grew up in a region where Mandarin is not very common.

A common noun refers to a noun that does not point to a specific person or thing.

I commute to work every day by local train.

He lost everything.

She is planning a date with her current boyfriend.

My boyfriend gave me a gift.

Everyone was surprised by the news.

He is a very shy person in real life.

A healthy sex life is important for overall health.

After the earthquake, we were forced to live in evacuation shelters.