On the macro level, why the United States must decline.

1. The political system of the United States still has considerable problems. The separation of powers does supervise each other, but the shortcomings are very obvious, such as low efficiency, mutual restriction, and the interests of the party are higher than those of the state. Personal interests are higher than national interests.

2. The development of the United States is not caused by the rationality of the regime. More is to make a fortune in two world wars. Especially during World War II, it collected the world's gold, wealth, technology and elites.

3. The United States is now full of contradictions about the world, especially the rise of China. On the one hand, I want to enjoy the dividend of China's development. On the other hand, they are worried about the strength of China and suppress China. It's now or never, and if you don't grasp it well, it's over.