Yes, stock index futures are divided into three major contracts, with IF corresponding to CSI 300, IC corresponding to CSI 500 and IH corresponding to SSE 50. 1803 refers to the March contract 18, and the contract of stock index futures is replaced on Friday of the third week of each month, that is, the March contract will be delivered on Friday of the third week of March and replaced with IH 1804. I only need 5000 yuan to make a first-hand stock index here, and the handling fee for closing positions in the day is as low as that in 300 yuan.