Secondly, in history, North Mang was next to the Yellow River. At that time, there were many nobles around the Yellow River, so many people could only choose places close to themselves after death. Coupled with the environmental reasons of Beijiang itself, many ancient emperors were buried in Beijiang. If they didn't have a capital near here at that time, it is estimated that there wouldn't be so many imperial tombs on Beimang Mountain.
Moreover, the feng shui of Beimang is also very good, with mountains behind and rivers in front. In ancient times, this was the best burial place, and Beimang Mountain was near Qinling Mountain, which belonged to Kunlun Mountain geographically. Kunlun Mountain has been known as the source of Long Mai since ancient times, so Beimang is an excellent land of geomantic omen on the Long Mai, and Taoism is the best at geomantic omen.
Judging from the historical records preserved now, Beijiang attracted many emperors to be buried here at that time, including Liu Xiu. Besides him, there are about twenty emperors buried here. It can be seen that Beimang is a very suitable place for burial in the hearts of emperors, otherwise it would not attract so many people to build tombs here.