On Tuesday, March 31, the Shanghai Composite Index opened up 0.78 points, or 0.02%, at 3924.07. The Shenzhen Component Index opened down 42.51 points, or 0.31%, at 13683.68. The CSI 300 Index opened down 0.03 points, or 0%, at 4491.92. The ChiNext Index opened down 26.08 points, or 0.8%, at 3247.28. The STAR Market 50 Index opened down 5.88 points, or 0.46%, at 1283.9.