The world doesn't know the real intentions of Communist China; we can only guess. To feed its rapid economical progress, China needs natural resources from all over the globe. Its enormous population and improvement of living standard create problems more rapidly than the government can solve them. Its military progress, and particularly strategic hardware of the offence, are the reflection of China’s global interest and aggressive long term strategy.
China will soon have the capacity to intimidate all nations, including the US. It already has more hardware than any single state. It has an unlimited supply of educated, trained soldiers. With very short notice its army can mobilise more personnel than all of NATO combined.
Whatever happens in the future will likely shock the world. Empires come and go. Will China be the next one?