If the GDP of the United States increases, that is, the economic data is beneficial to the American economy, then the dollar will fall (depreciate).

Because the US dollar is a safe-haven currency, GDP will increase more than expected, investors' demand for safe haven will weaken, and US dollars will be thrown out to invest in other assets, so the US dollar will fall.

However, China's RMB is not a safe haven currency, so China's GDP growth, especially maintaining its trade surplus, will make it necessary for its currency to appreciate. At the same time, economic growth is expected to attract investment from other countries, and the inflow of hot money will drive the appreciation of the RMB.

The stock market is positively related to the economy. If the economic growth exceeds expectations, the stock market will generally rise. This is the same in China and the United States.