Sumdorong Chu

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In 1987, Chinese troops had resorted to a similar exercise( like ar daulat Beg Oldie) at Sum Dorong Chu, north of Tawang in Arunachal. India had ramped up its forces and then withdrawn. China still holds that territory.

http://www.tribuneindia.com/2013/20130424/main1.htm


Sumdorong Chu (S-C) - referred to as Sangduoluo He in the Chinese media - is a rivulet flowing north-south in the Thag La triangle, bounded by Bhutan in the west and the Thag La ridge to the north. On June 26, 1986, the Government of India (GoI) lodged a formal protest with Beijing against intrusions in this region by Chinese troops, that had occurred beginning on June 16. Beijing denied any such intrusions and maintained that its troops were in a location north of the McMahon Line (ML), while the official Indian stance was that the Chinese troops had intruded south of the ML.
credit  http://www.bharat-rakshak.com/MONITOR/ISSUE3-3/natarajan.html