滚动更新丨A股三大指数集体低开，向日葵一字跌停

Market Overview - The A-share market opened lower with the Shanghai Composite Index down 0.48%, the Shenzhen Component down 0.63%, the ChiNext Index down 0.93%, and the Sci-Tech Innovation Board down 0.94% [2][3] - The Hang Seng Index opened down 0.1%, and the Hang Seng Tech Index fell by 0.55% [6][7] Sector Performance - AI application stocks, CRO, commercial aerospace, brain-computer interface, nuclear fusion, and robotics concepts saw significant declines [1][3] - Energy metals, cybersecurity, and cross-border payment concept stocks remained active [3] Notable Stocks - Sunflower (向日葵) opened at a limit down due to an investigation by the China Securities Regulatory Commission for suspected information disclosure violations, leading to the termination of its asset restructuring [3][4] - Tianpu Co. (天普股份) approached a limit down after receiving an inquiry letter from the Shanghai Stock Exchange regarding its main business and executive qualifications [4][5] - Ctrip Group (携程集团) fell nearly 15% following an investigation by the market regulatory authority [6][7]