The spatiotemporal evolution of ancient cities from the late Yangshao to Xia and Shang Dynasties in the Central Plains, China

Heritage Science

Table 1 Altitudes of cities in the Central Plains region

Altitudes (m)	The number of ancient cities in the late Yangshao Period	The number of ancient cities in the Longshan Period	The number of ancient cities in the Xia and Shang Dynasties
0–100	2	8	6
100–200	11	11	14
200–300	1	2	1
300–400	2	0	0
400–500	1	0	1
> 500	0	0	0