It takes 9 hours by high-speed train from Baoding to Sanya, Hainan. Baoding, known as Shanggu, Baozhou and Fu Bao in ancient times, also known as Boot City, is a prefecture-level city under the jurisdiction of Hebei Province and one of the central cities in Beijing, Tianjin and Hebei approved by the State Council. [4] Baoding is located in the west of central Hebei Province, at the eastern foot of Taihang Mountain and in the west of Jizhong Plain, with geographical coordinates of 3814 ′ 29 ″ to 39 57 ′ 3 ″ north latitude and1/3 45 ′ 32 ″ east longitude. It borders Langfang in the east, Langfang and Cangzhou in the southeast, Hengshui in the south, Shijiazhuang in the southwest, Shanxi in the west, Shanxi and Zhangjiakou in the northwest, Beijing in the north and Langfang in the northeast. [5 1] is the strategic hinterland of xiong'an new area, which is in a tripartite confrontation with Beijing and Tianjin. The total area is 22,000 square kilometers (excluding xiong'an new area, Dingzhou10.93 million square kilometers), and the permanent population is/kloc-0 1.4372 million (excluding 9,242,600 in Dingzhou, Rongcheng, Anxin, Xiongxian and Levin). Among them, the urban area is 253 1 km2 and the population is 3 153500.