[Stock Index Futures Opening in the Morning Session] The main contract of CSI 300 stock index futures (IF) was flat, the main contract of SSE 50 stock index futures (IH) fell by 0.01%, the main contract of CSI 500 stock index futures (IC) rose by 0.13%, and the main contract of CSI 1000 stock index futures (IM) rose by 0.08%.