Group 1 - A-shares experienced a significant decline today, attributed to multiple factors including the Federal Reserve's decision to maintain interest rates and geopolitical tensions in the Middle East [1][2][8] - The Federal Reserve's meeting resulted in no interest rate cuts, with Chairman Powell citing uncertainties in inflation and trade tensions as reasons for the decision, leading to a rebound in the US dollar and a drop in US stocks [1][2] - The Middle East situation remains tense, with recent attacks affecting securities trading centers, contributing to market volatility [2] Group 2 - A-shares saw a substantial increase in trading volume, reaching 1.28 trillion, with a net outflow of 73.9 billion, marking one of the worst trading days since June [3][5] - The majority of sectors, except for oil and gas, faced declines, indicating a broad market downturn [5] - Despite the downturn, there are no immediate signs of a major risk event, suggesting that while the market is volatile, it is not in a state of crisis [5][8] Group 3 - Technical analysis indicates that the market has formed a top structure since June 10, and the current decline was anticipated [11] - Many indices, including the CSI 1000, are showing signs of potential bottom structures, although overcoming the larger top structures may be challenging [11]