[A-Share Shanghai Composite Index Opens with a Rapid Drop of Over 1%, Shenzhen Component Index Down 0.9%] Deep Tide TechFlow reports: On September 11, the A-Share Shanghai Composite Index opened with a rapid drop of over 1%, the Shenzhen Component Index fell 0.9%, the ChiNext Index dropped 0.5%, and both the STAR 50 and Beijing Stock Exchange 50 Indexes declined by over 1%. Over 4,900 stocks across the two markets fell. (Jin10)