A股持续下跌，沪指跌超2%，深证成指跌超3%，创业板指跌3.4%，北证50、科创50跌近4%，科创100、科创200跌超4%

Core Points - The A-share market has experienced a significant decline, with the Shanghai Composite Index dropping over 2%, the Shenzhen Component Index falling more than 3%, and the ChiNext Index decreasing by 3.4% [1] - The North Star 50 and Sci-Tech 50 indices both fell nearly 4%, while the Sci-Tech 100 and Sci-Tech 200 indices dropped over 4% [1] Index Performance Summary - The Sci-Tech 200 index decreased by 4.48%, closing at 1191.94 [2] - The Sci-Tech 100 index fell by 4.32%, ending at 1351.20 [2] - The Sci-Tech 50 index dropped by 3.92%, with a closing value of 1361.11 [2] - The North Star 50 index declined by 3.72%, closing at 1433.29 [2] - The ChiNext Index decreased by 3.40%, ending at 2934.09 [2] - The Shenzhen Component Index fell by 3.10%, closing at 12681.04 [2] - The CSI 1000 index dropped by 3.02%, with a closing value of 7177.96 [2] - The CSI 2000 index decreased by 2.86%, ending at 2963.28 [2] - The CSI 300 index fell by 2.32%, closing at 4511.34 [2] - The Shanghai Composite Index dropped by 2.03%, ending at 3836.60 [2] - The CSI 50 index decreased by 1.77%, closing at 2965.74 [2] - The micro-cap stocks index fell by 1.19%, ending at 3027.67 [2]