hanchengshiIntroduction：Hancheng Introduction: Hancheng was called "Longmen". Sub-prefecture-level city under the jurisdiction of Shaanxi Province. On the west bank of the Yellow River in the eastern part of Shaanxi Province, the northeast of the Guanzhong Basin. In October 1983, the county was established as a city, and in 1986 it was approved as a national historical and cultural city. It is also an important energy industrial city. It is now a separate city in Shaanxi Province with a total area of ​​1621 square kilometers and a population of 400,000.