Because futures are based on spot, I can tell you directly that speculators are not allowed to make physical delivery, only institutional households can. At the specified trading time, if you can't, the futures company will also help you close the position. Reverse trading is easy to understand. He can only buy stocks up, not down. Futures is a two-way transaction. You can buy, open and sell. Anyway, that is to say, if you buy an open position, you will sell it (that is, the income from the original purchase will in turn buy and fall). If you sell and open a position, you have to buy and open a position (that is, the opposite). /playlist _ show/ID _ 3914288.html This is my futures album video on Youku. You can look at it and collect it.