Qinghai (Chinese: 青海; pinyin: Qīnghǎi; Wade–Giles: Ch'ing-Hai), is a province of the People's Republic of China, located in the west of the country. It is named after Qinghai Lake, and was formerly known as Kokonur in English, from the Oirat language. It borders Gansu on the northeast, the Xinjiang on the northwest, Sichuan on the southeast, and the Tibet Autonomous Region on the southwest.