Qiangs fleeded to the southern-western china about 3000 years ago. A branch of Qiang has some ballads describing many events once happened 3000 ago.
By the way, any contact of yours? Can I have one?
First the fake ap is not legal to india, it's stolen by the British and Qing didn't sign any protocol.
Second before Nehru,the independent india did not have any claim of that area.
The most,why your gov. still request that area because it is under its control without any chinese military powers...