How much land has been occupied by China so far?

The world is united against China. The aggressive attitude that China is showing on the border raises questions about whether China itself is scared or intimidated? 

Tibet's capital Lhasa has been occupied by China. Tibet is a Buddhist area and is also a neighbor of India. But after the occupation of China in the fifties, people here have come and taken refuge in India.

The whole world knows that China's policy is occupying.