It is now one of the major mosques in north China.
The canal allows water transport between north and south China.
There were only a hundred or two up in North China.
North China (then the most populous part) is thought to have lost about three-quarters of its population.
Tangshan is also called "the capital of porcelain in north China".
When it came to choosing which drug company would be the model, North China got the nod.
What I wasn't told as a child was how precious few such miracles had been during the summer of 1900 in north China.
Xiaowen's reforms were very successful and lead to prosperity for north China.
Tangshan is an important heavy industry city in North China.
North China is chronically short of water and subject to frequent droughts.