Group 1 - The U.S. federal government officially shut down, affecting over 600,000 federal employees who will be on unpaid leave, raising concerns about a potential short-term increase in unemployment rates [3] - The government shutdown adds uncertainty to U.S. economic growth momentum and the Federal Reserve's monetary policy direction [3] - Fitch Ratings indicated that the government shutdown will not impact the U.S. sovereign rating in the short term, while S&P noted that the shutdown could reduce GDP by 0.1-0.2 percentage points per week [3] Group 2 - The Hong Kong Stock Connect recorded a net inflow of HKD 15.4 billion on Tuesday, with Alibaba (09988.HK) seeing the highest net inflow of HKD 3.6 billion, followed by the Tracker Fund of Hong Kong (02800.HK) [3] - Conversely, UBTECH (09880.HK) experienced the largest net outflow of HKD 63 million, followed by Crystal International (02228.HK) [3]