The Shanghai Composite Index closed the morning session at 3692.58 points, down 0.13%; the Shenzhen Component Index closed at 11496.44 points, down 0.33%; the ChiNext Index closed at 2626.31 points, down 0.45%; the CSI 300 Index closed at 4098.17 points, down 0.13%; the STAR 50 Index closed at 1295.83 points, down 1.50%; the CSI 500 Index closed at 6655.63 points, down 0.85%; and the CSI 1000 Index closed at 6587.87 points, down 0.65%.