The article examines how the China stock market is connected to the US stock market during the global financial crisis from 2007 to 2010. By using a special statistical model, the researchers found that the correlation between the two markets increased during the crisis but then decreased afterwards. This suggests that the two markets are influenced by different factors, with the US market more tied to its economy and the China market more influenced by government policies. Overall, the study shows that the two markets are becoming more connected over time due to financial globalization.