1. economic scale: the economic scale of the United States is still the largest in the world, which provides a favorable foundation for its financial strength. China's economy is also developing rapidly, but there is still a certain gap.

2. Market openness: The US financial market is relatively open, attracting global investment and capital flows. In contrast, China's financial market is relatively closed and restricted in some aspects.

3. Technology and innovation ability: The United States has developed financial technology earlier, with a high level of technology and innovation, and has a competitive advantage in the payment system and digital currency. China is also developing financial technology rapidly, but it still needs time to catch up.