Shanghai TD is actually Au T+D, followed by Ag T+D, which is silver. These two are the so-called silver and gold deferred transactions. If you want to know, go to Baidu and read encyclopedia /view/97 12536.htm, which is much better than my copy. Futures can be short, and now futures are open late, and you can watch them for four hours at night. T+0 trading mode. Margin trading system. The first two are full transactions, not margin. You can find the relevant content in the encyclopedia. You can also learn something called spot. This is better than futures. The so-called spot is a commodity with instant price. Futures are the prices of commodities after a fixed period of time. Spot silver is very popular in the current market. Products such as laurel silver and Tiantong silver are very popular with investors. How long can I be short? 22-hour trading. The key of T+0 trading mode is that it can be held for a long time. If it is the lowest or highest at a certain point, once it is held for a long time, it can get great benefits, unlike futures, which must be delivered at maturity. These are popular products in precious metals investment at present. The futures market is also a late market recently launched. Forced by the dominant position of the spot market, there is no way to open it. Personally, I suggest you pay more attention. Now is the best time to enter the market.