Given that the current Minister of External Affairs, S. M. Krishna, had a long political career representing Karnataka State, with its high-tech capital of Bangalore, he is associated the the confident and fast-growing new India and so might especially resent any hint of Chinese intervention in South Asia.
India decries joint US-China statement on Indo-Pak Relations
Since both the US and China have traditionally been allies of Pakistan, any joint US-China call for better relations between the two major countries in South Asia would likely irk New Delhi.