The main issue separating India and China is its military support to Pakistan. The border issue is relatively minor and the South China Sea issue is even more minor.
However we must be cautious, we cannot expect India and China to suddenly become close. If that were to happen the Pakistanis would jump back into the arms of the western powers, who created their nation and have been their ally for many decades. Pakistanis will take help from anybody and everybody who will arm them against India.
However we must be cautious, we cannot expect India and China to suddenly become close. If that were to happen the Pakistanis would jump back into the arms of the western powers, who created their nation and have been their ally for many decades. Pakistanis will take help from anybody and everybody who will arm them against India.