The gains of stock index futures widened, with the main contract of CSI 300 Index Futures (IF) rising by 1.15%, the main contract of SSE 50 Index Futures (IH) rising by 1.38%, the main contract of CSI 500 Index Futures (IC) rising by 0.77%, and the main contract of CSI 1000 Index Futures (IM) rising by 0.51%.