We lost the last war we fought with China, and would the American public actually go for it. 100 is enough to create radically altered climate and poison the air., so we have bout 6,900 more than needed and we have to maintain ALL of them.
China's policy? Ha, China will do what anyone does to ensure survival. But they need only threaten us on trade and create chaos that pisses off the America public to undo us. Heck could the government really get American's into a war with China unless China actually attacks us on American soil?
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We could never because getting the public to support it would be a challenge thus the great problem Vietnam and Iraq had. Plus convincing Americans their lives need be sacrificed so trade lanes stay within our sphere of control is unlikely to be a major rallying cry for people to risk their lives.
That and we could never actually fight a real war with China for the same reasons China isn't going to fight a real war with us.