香港恒生指数7月31日（周四）开盘下跌194.06点，跌幅0.77%，报24982.87点；香港恒生科技指数7月31日（周四）开盘下跌31.96点，跌幅0.58%，报5458.8点；国企指数7月31日（周四）开盘下跌61.64点，跌幅0.68%，报8976.63点；红筹指数7月31日（周四）开盘下跌9.71点，跌幅0.22%，报4339.79点。

Core Viewpoint - The Hong Kong stock market experienced declines on July 31, 2023, with major indices showing negative performance. Group 1: Index Performance - The Hang Seng Index opened down by 194.06 points, a decrease of 0.77%, closing at 24,982.87 points [1] - The Hang Seng Tech Index opened down by 31.96 points, a decrease of 0.58%, closing at 5,458.8 points [1] - The China Enterprises Index opened down by 61.64 points, a decrease of 0.68%, closing at 8,976.63 points [1] - The Red Chip Index opened down by 9.71 points, a decrease of 0.22%, closing at 4,339.79 points [1]