恒生生物科技指数涨超4%，英矽智能、金斯瑞生物科技、诺诚健华、康方生物均升超6%。

China's Ministry of Agriculture and Rural Affairs and the China Meteorological Administration on Sept 20 warned that from Sept 21–28 persistent rainfall will raise autumn‑harvest risk across parts of China, including southeastern Northwest, eastern Southwest, the Jianghan Plain (central Hubei), western Huang‑Huai and northern Anhui. Between Sept 23–27 heavy to very heavy rain is expected in northeast Sichuan, north‑central Chongqing, southeast Shaanxi, southern Henan, northwest Hubei and northwest Anhui, with some areas seeing torrential downpours and localized extreme rainfall. Authorities urged expedited harvesting of mature crops during dry intervals, prompt ventilation and drying before storage, and post‑rain drainage to lower soil moisture and enable farm machinery operations.

Hong Kong open: Hang Seng Index down 0.01%, Hang Seng Tech Index down 0.08%. Biotech names outperformed; Kailaiying (06821.HK) +3.43%, Zhaoyan Xinyao (06127.HK) +3.39%.