China's Shanghai Composite Index closed down 17.59 points, or 0.43%, at 4090.48 on Thursday, June 18. The Shenzhen Component Index closed up 149.75 points, or 0.94%, at 16030.7. The CSI 300 Index closed up 10.21 points, or 0.21%, at 4941.6. The ChiNext Index closed up 85.34 points, or 2.05%, at 4252.39. The STAR Market 50 Index closed up 70.69 points, or 3.84%, at 1911.51.