I assume you're meaning a river in particular, China has more than one. I think in particular you may be referring to either the Yellow River (Huang He), the traditional cradle of Chinese Civilisation in the north, or the Yangtze River in the south which feeds the majority of the country's population.
I believe that it is the Yellow River.
The river flowed to the sea.The lava flowed across the road. Electricity flowed through the wire.
The Egyptians thought the river that ran through their country (the River Nile) to be mysterious because,unlike other rivers,it flowed the opposite direction.
The Mississippi river
Euphrates, ancient Mala
Could it possibly be River Camel in Cornwall?
It's called Mekong River.
The Nile River flowed through Ancient Egypt, Kush (also known as Cush and Nubia), and Aksum (also known as Ancient Ethiopia). By virtue of this, any country that occupied any of those civilizations (such as the Assyrians or Macedonians) also controlled some of the Nile's territory.
The Yellow River (Huang He) and Yangtze River were important rivers in ancient China.
Ideas flowed like a great river in ancient Egypt.
The river flowed quickly.
The top searches for the above question were from websites like Wikipedia and Encyclopedia Britannica. All of the answers were in the same saying that the Luan river flowed north through China. The searches included a picture and a breif description about the river and its location.