The most important factor affecting non-ferrous metal futures in recent days should be the exchange rate of RMB against the US dollar. The continuous appreciation of RMB has dealt a great blow to metal futures. On August 3rd, I shorted the Shanghai Copper 1 108 contract and made some money. However, you should do spot trading in purchasing, so you don't know much about it. When I analyze futures speculation, I usually look at K-line combination and. I think you should study the price trend from the aspects of supply and demand, such as domestic copper and aluminum companies, the demand of our economic situation for them, the growth of international adverse environment, and so on. In addition, by referring to foreign futures markets, London copper futures have a great influence on us.