Originally posted by Lord Shadow Z
They could be waiting for the right moment, waiting for a weakness in their potential enemies. Plus, not showing what they are capable of gives less information away as to what techniques/strategies they might use.China could be hype but like Russia they aren't majorly fighting anywhere but WE are, losing troops, resources, morale etc. I'd say they're keeping themselves fresh while we're running ourselves into the ground trying to fight something we largely created and fanned the flames of in the first place.
The reason the US military seems weaker than it truly is at the moment comes from the fact they are fighting an enemy against whom their most powerful weapons are essentially useless. It has taken a radical redesign of the role of infantry as counter-insurgent forces, and basically benched much of the military hardware that would be relevant in conflict with a more formal military.
However, such a conflict is not what would be seen in a war against China (unless America tried some type of long-term occupation, that would fail terribly). China is a generally industrialized nation with a huge military budget and investment in modern military technology. They have planes, boats, tanks, etc. They would fight with tactics that are what the Americans have planned to fight against for decades. The entire defense strategy of the American military is specifically designed to counter the type of military threat China or Russia would pose.
In terms of technology, America is still far superior to China on every front, and in terms of numbers, America has more essential equipment than do the Chinese. They may not have the same number of ground troops, but they have more Air Craft carriers, air fortresses and nuclear subs... by at least a 2:1 ratio (though, for something like Aircraft carriers, I don't believe China is expecting to have a single operational one for another decade).
China might be "biding their time", but as I was saying earlier in this thread (or a different one), assuming they continue the level of growth they are currently seeing (which they wont), they may develop a clear military advantage over America in 50+ years, but that almost assumes America collapses or no longer pursues global military dominance. Best estimates I've seen say it will be 20+ years before China can fully assert itself within its own sphere of influence.
This is, of course, excluding the nuclear option. China and America aren't even playing the same game when it comes to that. China has some nukes and some defenses, America has the most sophisticated and robust nuclear offenses and defenses on the planet.
To be frank, China will not surpass America in military power for the foreseeable future, and America isn't losing manpower or treasure all that fast either. By comparison, the wars in Afghanistan and Iraq have been incredibly cheap in terms lost money or soldiers. Additionally, war between China and America may favor America in terms of economics.
As a consumer nation, America has many people looking for work but no demand for their labour because of the cheap goods from China. If that were to stop in a military situation, the government and the private sector could invest in getting these people to work almost akin to "war communism" that was a major part of "total war" theory. China stands to loose employed labour force in such a conflict, as they are a supplier nation. If trade between America and China was cut off, China would now be stuck with a surplus of goods its own population wouldn't be able to buy, and would face tremendous economic constriction. Sure, the Chinese state could invest to offset the impact, but that investment would be at the expense of investment into military goods. Even just converting the factories into military factories wouldn't offset it entirely. It would be devastating for both economies, with no doubt, but as with militarization in Germany prior to WW2, American investment into the production of more war-machines may have beneficial economic impacts that would see them fare better in an America-China conflict.