港股创新药概念股集体下跌，再鼎医药跌超10%

Group 1 - The core viewpoint of the article highlights a collective decline in Hong Kong's innovative drug concept stocks on September 4, with significant drops in various companies [1] Group 2 - Zai Lab experienced a decline of over 10% [1] - Hengrui Medicine, Genscript Biotech, and Cloudmed fell by more than 5% [1] - WuXi AppTec dropped over 4%, while Innovent Biologics, WuXi Biologics, and Hansoh Pharmaceutical decreased by more than 3% [1]