C810 ten-sided ambush

The Chasm was the earliest artificial canal linking the Yellow River and the Huai River in ancient China. The Warring States Kingdom, King Wei Hui, began construction in the last ten years.

It led the Yellow River in the north of Yingyang, passed through Zhongmu in the east, opened the north and turned south, passed through YueDong, Taikangxi and Huaiyang