China's Shanghai Composite Index opened down 16.15 points, or 0.39%, at 4090.1 points on Wednesday, June 24. The Shenzhen Component Index opened down 71.8 points, or 0.45%, at 15782.4 points on Wednesday, June 24. The CSI 300 Index opened down 19.0 points, or 0.39%, at 4900.38 points on Wednesday, June 24. The ChiNext Index opened down 10.29 points, or 0.25%, at 4181.91 points on Wednesday, June 24. The STAR Market 50 Index opened down 19.87 points, or 1.04%, at 1896.34 points on Wednesday, June 24.