Also, China has a different military profile. They're a major nuclear power. And having one living on your border is very uncomfortable. Kalim Bahadur, head of central Asian studies at Jawaharlal Nehru University, said China's nuclear capability lay behind India's refusal to sign the Comprehensive Test Ban Treaty at the United Nations in September. But there will always be political and economic reasons for friction.
China has demands to make over Tibet.
India is concerned about Beijing's links with Pakistan and claims China is still holding border territory belonging to India. Bhaskar argues China and Pakistan will want to retain close ties. It makes strategic sense for both, in that it helps to keep India in check. For armaments, India knows that China will probably limit itself merely to the role of supplier. Generally, the Chinese do not fight other people's battles.