Peace treaty between China and Tibet (783)

The Peace treaty between China and Tibet of 783, also called the Sino-Tibetan Peace Treaty of 783 or Treaty of Qingshui (Chinese: 清水之盟) is a peace treaty negotiated in 783 between the Chinese Tang dynasty, ruled by Emperor Dezong and the Tibetan Empire ruled by Trisong Detsen, giving the latter all the land in the Kokonor region which corresponds to present-day Qinghai Lake. The treaty is celebrated in Qingshui, and was the sixth treaty between China and Tibet.