China's Shanghai Composite Index opened down 15.25 points, or 0.37%, at 4120.14 on Monday, May 18. The Shenzhen Component Index opened down 96.07 points, or 0.62%, at 15465.3. The CSI 300 Index opened down 23.26 points, or 0.48%, at 4836.33. The ChiNext Index opened down 34.0 points, or 0.87%, at 3895.07. The STAR Market 50 Index opened down 5.88 points, or 0.35%, at 1690.38.