I've always taken that as my guiding principle and the rest is just set dressing. You can have dragons in it, or aliens and starships, or a western about a gunslinger, or even literary fiction, and ultimately you're still writing about the human heart in conflict with itself.
The Chinese military budget today is officially listed as, I think, about $15 billion. But even if you double it, that's only a tenth of ours. So the possibility of China challenging the United States for the next ten years over the Pacific is next to zero. There could be a conflict between us and China over Taiwan, but I think that, too, will not occur with the proper policies on both sides.