底部区域出现反弹的决定因素是什么？

Group 1 - The core factors for rebounds in the bottom area are strong policies, positive external events, and liquidity easing [1][9][17] - Historical data shows that the average decline of the Shanghai Composite Index before hitting the bottom is 14.6%, while the average rebound after is 21.3% [1][9] - Major policies and external events have historically driven rebounds, such as the "Four Trillion" plan in November 2008 and the easing of pandemic restrictions in December 2022 [1][9][17] Group 2 - Current market conditions suggest potential for a rebound if policy measures are intensified, with the Shanghai Composite Index closing at 2854.37 points and a PE ratio around 27% [1][17] - Recent government policies aimed at boosting consumption and easing real estate restrictions are being implemented, including subsidies for equipment updates and consumer vouchers [1][17][19] - Economic indicators such as export growth and fixed asset investment have shown signs of pressure, indicating that stimulating domestic demand is a key focus of policy efforts [1][19] Group 3 - The liquidity environment remains loose, with expectations of a Federal Reserve rate cut in September and potential further easing in domestic monetary policy [1][19] - The report highlights that the short-term external risks are relatively low, with improved conditions in U.S.-China relations and a decrease in recession fears in the U.S. [1][19] - The report suggests a balanced allocation strategy across technology, undervalued dividend stocks, and mid-to-low-end consumer sectors, based on historical performance trends [1][9][17]