Xihai Jun
Xihai Jun is a prefecture of ancient China located in Qingzang Plateau. Xi means west, Hai means sea, and Jun is a kind of administrative unit above county in ancient China and may be translated as prefecture or province.
Xihai Jun or Xihai Prefecture was first established in the 4th year of Yuanshi in Han Dynasty.
The site of the Longqi, the capital city of Xihai Jun in Han Dynasty, is located on the south bank of Huangshui River, near Qinghai Lake at. Today, it is called Sanjiao Cheng. It is near the county town of Haiyan County and 90 kilometers west to Xining City, the capital city Qinghai province.
In the 23rd year of Zhenguan, King of Xihai Jun was conferred upon Songtsen Gampo, the King of Tubo, by Tang Gaozong, the emperor of Tang Dynasty.
