If Tibetans are Chinese, then I am Seleucus Nicator!
Tibetan are not Chinese, neither are Uighurs Chinese. India does not share a border with China. India shares a border with Tibet and East Turkestan.
The treachery with which Mao Zedong took control of Tibet, and the conspiracy that Mao and Stalin hatched to get Uighur leaders killed in a plane crash, does not make China a very trustworthy country. Nikita Khruschyov saw the two faced moster that Mao was, and rightly sidelined him.
Chinese land grabbing of Tibet itself made China very unpopular in India, and the subsequent building of a road through Aksai Chin was the beginning of hostilities. Propping up Pakistan has only made matters so putrid that it will take generations for India to trust China, if ever.
Personally, I do respect and admire the Chinese civilization, and its numerous contributions. Unfortunately, as long as the current People's Republic of China and the Taiwan Republic of China continue to claim Indian land, India will not be friends with either regime.
What is China?