Langfang is a prefecture-level city in Hebei Province, located in the east of central Hebei Province, between Beijing and Tianjin, and is known as the "Pearl on the Beijing-Tianjin Corridor". It has jurisdiction over six counties, namely Yang Guang and Anci District, Dachang, Xianghe, Yongqing, Gu 'an, Wen 'an and Dacheng, Langfang Economic and Technological Development Zone, and two county-level cities, Sanhe and Bazhou. 1 Langfang has a long history. Humans lived here as early as 6000 years ago. More than 4,000 years ago, "The Yellow Emperor ruled the world to establish all peoples, and only then did he pass through Anxu", which was near Xia 'nan Sub-district. "Langfang City Records" contains: "The current situation is that Xia and Shang Dynasties are in Jizhou, Warring States, Qin and Han Dynasties are in the wilderness, Jin and Tang Dynasties are in the border of Youzhou, and Yuan, Ming and Qing Dynasties are in Gyeonggi." The Boxer Rebellion in Langfang in the late Qing Dynasty started the first battle of China people against "Eight-Nation Alliance". Langfang is the geographical center of Beijing-Tianjin-Hebei urban agglomeration, located between Beijing and Tianjin, and all counties (cities, districts) under its jurisdiction 10 border on Beijing and Tianjin. Known as the "Beijing-Tianjin Corridor and Golden Zone". The urban area is 40 kilometers away from Tiananmen Square in Beijing, 60 kilometers away from the central area of Tianjin, 70 kilometers away from the capital and Tianjin Airport, 0/00 kilometers away from Tianjin Port, and close to the planned Beijing New Airport. Seven expressways and five railway trunk lines cross the territory, and 10 national highway and 20 provincial highways crisscross, making it one of the areas with the highest density of railways and highways in China.