港股午间收盘，恒生指数跌1.21% 恒生科技指数跌1.66% 芯片股普跌

Market Performance - The Hang Seng Index closed down 1.21% at midday on September 4 [1] - The Hang Seng Tech Index fell by 1.66% [1] Sector Performance - Semiconductor stocks experienced a broad decline, with major players like SMIC, Shanghai Fudan, and Huahong Semiconductor dropping over 6% [1] - Large technology stocks mostly declined, with Alibaba falling nearly 4% and Xiaomi and Kuaishou dropping over 2% [1]