On Tuesday, December 16, the Shanghai Composite Index opened down 6.41 points, or 0.17%, at 3861.51. The Shenzhen Component Index opened down 27.21 points, or 0.21%, at 13084.88. The CSI 300 Index opened down 9.64 points, or 0.21%, at 4542.42. The ChiNext Index opened down 7.37 points, or 0.23%, at 3130.43. The STAR Market 50 Index opened down 5.38 points, or 0.41%, at 1313.53.