China's Shanghai Composite Index opened down 17.1 points, or 0.44%, at 3865.32 on Friday, July 17. The Shenzhen Component Index opened down 140.44 points, or 0.97%, at 14348.21. The CSI 300 Index opened down 36.81 points, or 0.78%, at 4661.62. The ChiNext Index opened down 50.4 points, or 1.36%, at 3642.06. The STAR Market 50 Index opened down 16.9 points, or 0.92%, at 1829.98.