In recent years, global resources are becoming increasingly tight, and the prices of crude oil, gold, copper, zinc and aluminum are soaring. Some people think that these raw materials have risen sharply and should fall, so they throw out their own varieties. Looking back, we can see that the prices of these varieties have continued to rise after a strong adjustment. The international copper price has been rising since 2003, and it is still hitting a record high in 2006. Those who dare to short international copper futures are all wiped out, including the short-selling mistakes of the State Reserve Bureau in the previous stage. In the final analysis, resources are getting more and more limited, supply is getting less and less, and there are more and more manufacturing enterprises. Some people think that if the price of non-ferrous metals rises, more mining can be done. Yes, the price will stabilize a little in a short time, but the result is less resources. The next round of price increase will be more rapid and amazing, because it is not a cyclical industry, but a non-renewable industry, so its long-term trend is based. If you can't see this clearly, you have made a historic mistake.