China's Shanghai Composite Index closed down 23.78 points, or 0.62%, at 3804.69 on Thursday, July 30. The Shenzhen Component Index closed down 372.64 points, or 2.73%, at 13285.8. The CSI 300 Index closed down 50.54 points, or 1.1%, at 4549.72. The ChiNext Index closed down 134.08 points, or 3.97%, at 3244.62. The STAR Market 50 Index closed down 90.33 points, or 5.38%, at 1588.41.