Tianmen, called Jingling in ancient times, is a municipality directly under the Central Government of Hubei Province. Because there was Tianmen Mountain in Qing Dynasty, it was named "Tianmen". It is located in the middle of Hubei Province, north of Jianghan Plain, north to Dahongshan, south to Hanjiang River, west to Jingyi and east to Wuhan. Tianmen has a long history, which has been built for more than two thousand years since the establishment of Jingling County in Qin Dynasty. Shijiahe site marks Tianmen's civilization history of more than 4000 years. Tianmen City is located at the junction of the foothills of Dahongshan Mountain and Jianghan Plain, and its landform belongs to Jianghan Plain. The terrain is high in the northwest and low in the southeast, decreasing from northwest to southeast in turn. The highest point is at the top of Fozi Mountain, with an altitude of 19 1.7m (height system in the Yellow Sea, the same below), and the lowest point is at Chenjiazhou, a continent in Duoxiang Town, with an altitude of 23.2m.
Xiantao, formerly known as mian yang, is a national garden city, a national health city, a central city in the west wing of Wuhan city circle, a hometown of Asian gymnastics, a national pilot city of new urbanization and a national pilot city of smart city. Wutai, Zhengchang, northwest of Xiantao, is the highest point, with an altitude of 34.50 meters (Wusong base, the same below); The five lakes in the southeast corner are the lowest, with an altitude of 21.50m.. The whole terrain is inclined with a slope of about 1/7000. The plains and waters in the territory generally constitute a pattern of "eight places, half beach and half water".
Therefore, the terrain of Tianmen decreases from northwest to southeast, with the highest elevation of 19 1.7m and the lowest elevation of 23.2m The terrain of Xiantao also decreases from northwest to southeast, with the highest elevation of 34.50m and the lowest elevation of 21.50m..