evidence: The Chip Chap River flows from the disputed Aksai Chin region in southern Xinjiang of China to Ladakh in India. It originates at the eastern edge of the Depsang plains and flows west, skirting around the Depsang Plains in the north. It discharges into the Shyok river. It is one of the upstream tributaries of the Indus river. The upper course of the river is in a relatively flat area with a drop of only 190 metres over 30 km. Several mountain streams from the south drain into the relatively stagnant pool of water in this area. Near the LAC that separates the Indian and Chinese controlled portions of Depsang Plains, the Lungnak Lungpa stream joins from north. Another stream passing by Daulat Beg Oldi (DBO) joins the river in the Indian controlled area. The combined river joins the Shyok at an elevation of 4800 m. The 1899 British offer to China for the border in Aksai Chin (The Macartney–Macdonald Line) placed the entire course of the Chip Chap River in the Indian territory. The 1956 claim line of China also did the same. [...] The Depsang Plains are located at the LAC that separates the Indian and Chinese controlled regions. The Chinese Army occupied most of the plains in 1962. India controls the western portion of the plains as part of Ladakh, whereas the eastern portion is part of the Aksai Chin region, which is controlled by China and claimed by India. In April 2013, the Chinese PLA troops set up a temporary camp in the Depsang Bulge, but later withdrew as a result of a diplomatic agreement with India.