A股午评：三大指数集体下跌，沪指跌0.43%创业板指跌0.8%，北证50涨0.57%，锂矿、军工装备板块领涨！超2300股上涨，成交额12782亿放量314亿

Core Viewpoint - The A-share market experienced a collective adjustment in the morning session, with the Shanghai Composite Index declining by 0.43% to 3973.31 points, while the Shenzhen Component Index fell by 0.35% and the ChiNext Index dropped by 0.8% [1] Market Performance - The North China 50 Index saw an increase of 0.57% [1] - The total trading volume in the Shanghai and Shenzhen markets reached 12,782 billion yuan, an increase of 314 billion yuan compared to the previous day [1] - Over 2,300 individual stocks in the market recorded gains [1] Sector Performance - Lithium mining, military equipment, and the Hainan and Fujian sectors showed resilience with upward trends [1] - Conversely, the gold, photovoltaic equipment, and pharmaceutical sectors experienced the largest declines [1]