Tianmen, called Jingling in ancient times, is one of the cities under the jurisdiction of Hubei Province 17, an important member of Wuhan city circle and the middle reaches of the Yangtze River [1-2], and a major node city in the Hanjiang River basin [3]. It is located in the middle of Hubei Province, north of Jianghan Plain, north to Dahongshan, south to Hanjiang River and east to Wuhan. In the fourth year of Yongzheng in Qing Dynasty (1726), Tianmen Mountain was named "Tianmen" because of its territory. 1994, the State Council approved Tianmen as a municipality directly under the central government of Hubei province. 20 16 years, the city's permanent population1286,600 people.
Xiantao is a county-level city directly under Hubei Province, the central city in the west wing of Wuhan City Circle, the hometown of Asian gymnastics, the central city of Jianghan Plain and an important member of the urban agglomeration in the middle reaches of the Yangtze River. Xiantao was originally named Mianyang with a history of 1500 years. It is one of the birthplaces of Jingchu culture. It is an alluvial plain with flat terrain, high in northwest and low in southeast. It belongs to subtropical monsoon climate zone, with mild climate and abundant rainfall throughout the year. With a total area of 2538 square kilometers, it governs 3 streets and 15 towns. In 20 16, the total population is 1563500.