to have sth to do with · to relate to · related to · to concern · concerning

There is no connection between them.

Hutongs are a type of narrow street, most commonly associated with Beijing, China.

The custom of eating dumplings on New Year's Eve is related to an ancient Chinese method of measuring time; in ancient China, each day was divided into twelve sections: the beginning of each day was called 'first time', which corresponds to the period from 11pm to 1am.

Are you related to the Nagashima family?

Does your family background involve Chinese medicine?