Just open an account with a futures company. Because the risk of stock index futures is relatively large. So there are restrictions on opening an account. There are risk tests, capital requirements, etc. Contact the broker for details. For example, Guo Xin Futures, Baocheng Futures and so on. Baidu searches for such local companies and then calls them. They will treat you as an interview with God and answer all your questions. Open a good account and you can operate it at home.