What is Panchsheel Pact China accused India of infringing?

The Panchsheel Pact, or the Five Principles of Peaceful Co-existence, are a set of principles agreed upon by India and China in 1954. They are mutual respect for each other's territorial integrity and sovereignty, mutual non-aggression, mutual non-interference, equality and mutual benefit, and peaceful co-existence. China recently accused India of 'trampling on' it by entering its territory.