China's Shanghai Composite Index opened down 24.7 points, or 0.64%, at 3839.67 on Wednesday, July 22. The Shenzhen Component Index opened down 94.32 points, or 0.66%, at 14169.97. The CSI 300 Index opened down 28.57 points, or 0.6%, at 4710.66. The ChiNext Index opened down 40.99 points, or 1.11%, at 3644.98. The STAR Market 50 Index opened down 28.38 points, or 1.49%, at 1874.78.