The Chinese, before the communist party took over, have generally been our allies. We also have a common enemy, Islam.
Worse thing we could do, is to underestimate the Chinese. The most read book about waging war, even today, was written in the 5th century by the Chinese strategist Sun-Tzu, called The Art of War - maybe you've heard of it?
The above said however, my biggest fear is a nuclear Perl Harbor style first strike attack by the combined Chinese, Russian, and Iranian forces. Knowing our undersea warriors are out there 24/7, watching over us, is the only reason I can still sleep at night.
It’s the only reason anyone has any sleep besides the grave.
Make that 5th century BC...