When China is openly swallowing countries between Indian and China - tibet, part of kashmir. And also parts of India like Arunachal pradesh (read interview of MP from Arunachal pradesh), India is expresing happiness?
India should express grave concern, displesure etc and start taking actions accordingly.
Well, having lived under foreign rule for 1000 years, its now in the blood of Indians to always appease, and think that problem will go away.