Where is the origin of the absolute coordinates of Chinese topography?

The origin of People's Republic of China (PRC) Earth is located in Shijisi Village, Yongle Town, Jingyang County, Xianyang City. "Geodetic origin" is also called "geodetic datum", which is the starting point for calculating geodetic coordinates in the national plane control network. In the early days of the People's Republic of China, the geodetic coordinate system used in China was measured from the former Soviet Union, and its coordinate origin was the Bolkov Observatory of the former Soviet Union. This situation is extremely disproportionate to the construction and development of China. Therefore, the relevant state departments decided to establish an independent geodetic coordinate system in China. Through on-the-spot investigation and comprehensive analysis, it is finally determined that the origin of China Earth lies in Shijisi Village, Yongle Town, Jingyang County, Xianyang City. The origin is established at 1978, and the coordinates are east longitude 105 55', north latitude 34 32' and altitude 417.20m..