Emperor Wei is a ruler of renewal in the Wei Dynasty; he swept clean the Northern Barbarians, pacified the West Qiang Rong, and subdued the East Fuman. He then intended to ride across the Cheng River to attack Nanliang and unify the world. Therefore, he established the Lianshan Grain Storage in the mid-stream of the Cheng River, built a naval fleet, and renamed this gorge "Dingguo" to demonstrate his resolve in crossing the river. This move prompted the Nanliang army to gather en masse here, confronting them from across the river.
