Final answer:
The depreciation of the onshore yuan against the US dollar can be attributed to China's monetary policy divergence with the US and the resilience of the US economy. Market participants consider the interest rate differential and economic performance of the two countries.
Step-by-step explanation:
The depreciation of the onshore yuan against the US dollar can be analyzed using the theory that unifies the monetary and asset approaches. In this case, the depreciation of the yuan is due to China's monetary policy divergence with the US and the resilience of the US economy.
China's monetary policy, as reflected by the one-year loan prime rate, has remained unchanged in recent months, while the US Federal Reserve is expected to raise interest rates. This divergence in interest rates creates a wider interest rate differential between the US and China, putting pressure on the yuan.
Additionally, market participants also consider the economic performance of both countries. When China's economic recovery slowed down, the US economy remained resilient, attracting investors and strengthening the US dollar.