What do you think of China's military?

I would not call them weak. I would call them patient. I think they fight us through other means. I think they are working to make our economy weaker so we would not be able to sustain a fight against them....in the long run of course. They supply other countries (North Korea, various in Africa) with enough to keep instability in regions around the world. Despite everything else I said, the most dangerous capability in war is their cyber capability. That is probably the biggest worry we should have with them. Just a guess though.

CPT (Join to see) I think China just have manpower advantage with force on force warfare.

I think we cannot underestimate them. When we did that before, we lost a lot of men in Korea. There is something to be said for numbers. What it would ultimately come down to is what kind of war. We have seen what happened in Iraq after "major combat" was over. Could we ever dominate a nation with over a billion people? I doubt it. Could they defeat us in the air and sea? I doubt that.