The Shangai Composite Index gained 39 points or 0.99 percent on Monday to close at 3951 points. Gains were led by Greenland Holdings (10.34%), Poly Real Estate (6.95%) and Jiangsu Hengrui (4.78%). Biggest losers were Haier Smart Home (-3.92%), Aluminum Corporation of China (-1.71%) and Zhejiang Zheneng (-1.18%).