evidence: Let us remember the basics to determine a border, as explained in the Report of the Officials of India and China in 1960/61; the Indian Report says: "In the Middle Sector both sides had referred to the watershed boundary and were clear as to where the watershed lay. In fact, the two alignments coincided for the most part along the main watershed. The Chinese alignment departed from it only at Gyuand Kauirik, Shipki, Nilang-Jadhang, Barahoti, Lapthal and Sangchamalla. All these departures from the watershed were also the points of divergence from the Indian alignment, and were, curiously enough, to the south and west, so as to include Indian territory in Tibet, and in no case the other way round. These isolated and small departures always in one direction were difficult to comprehend and emphasized that the correct traditional boundary lay along the watershed itself." [...] The Report of 1960 further noted: "In this sector the Chinese alignment are conformed for the most part to the traditional Indian alignment. Only in four areas did it diverge from the watershed to include certain pockets of Indian territory in China-the Spiti are (Chuva and Chuje), Shipki pass, the Nilang-Jadhang area (Sang and Tsungsha) and Barahoti (Wu-je) Sangchamalla and Lapthal. In this sector, therefore, it would be sufficient to prove the traditional and customary basis of the Indian alignment in these four areas." [...] Now, the Chinese came up with the argument that Pulamsumda in Nilang-Jadhang was Pulang-Sumdo mentioned in the 1954 Agreement.