Where did the first civilization in China develop and why?

The first civilization in china was called Anyang in 1700 B.C. I don't know why it was made but here is a guess.
China was a big place to make a civilization.
It had a source of running water which is an ideal place for cities.

Could you please answer this question too?
How did the geography of the Fertile Crescent help the Sumerians to prosper?