China are a modern military. Although a lot of what they have was stolen from America by cyber espionage and are inferior spinoffs they now have a base to advance with what they have. They are testing hypersonic missiles that we know of, and have aircraft carrier killers which cannot be defended against which makes America's super carriers almost obsolete in theory anyway. A land war would hurt America more and they are war weary. China still lacks an ability to project power but are working on it. They are mass producing naval assets and have nearly completed their first indigenous aircraft carrier with 2 more in the works. They will be a blue water navy pretty soon.