The Chinese believe that ultimately, to ensure their political ands social survival, they must win out over the USA. Whether that means either economically or militarily - they'd very much like to see our ability to compete for resources drastically reduced.
There is only so much aerable land and fresh water, and petroleum reserves folks.
Don't underestimate the Chinese Hegemony - think we won't go to war with them in the next 20-100 years? Think again.
And business IS war. Never forget.