尾盘放量，400亿龙头股冲击涨停

Group 1: A-Share Market Highlights - Construction Bank's stock rose by 1.54%, reaching a historical high, indicating continued market preference for high-dividend assets [1] - Jinbo Biological, a leader in the collagen protein sector, saw its stock increase by 9%, also hitting a historical high, reflecting the active new consumption concept market [1] - The micro-cap stock index rose by 0.18%, reaching a historical high, viewed as a risk appetite indicator [1] Group 2: Lithium Battery Sector - Near the market close, the lithium battery sector surged, with leading stock Guoxuan High-Tech rising by 9.15%, closing with a market value of 41.92 billion [4][6] - Guoxuan High-Tech announced a new high-safety solid-state battery with an energy density of 300Wh/kg, expected to be released in mid-May [6] Group 3: Technology Sector Adjustments - The technology sector experienced a pullback, particularly in the semiconductor, AI, and consumer electronics sectors, influenced by recent gains and external market uncertainties [8] - Despite the pullback, institutions remain optimistic about the technology sector, citing reduced crowding and a shift in focus towards long-term industry trends [8] - Key investment opportunities in May include multi-modal AI, AI/AR glasses, innovative drugs, and controlled nuclear fusion [9]