[Stock index futures midday closing] The main contract of CSI 300 Index Futures (IF) rose by 1.40%, the main contract of SSE 50 Index Futures (IH) rose by 0.96%, the main contract of CSI 500 Index Futures (IC) rose by 2.63%, and the main contract of CSI 1000 Index Futures (IM) rose by 2.80%.