The dollar index has never produced a direct bank for domestic commodity futures. Indirectly, it may be that the US dollar index plummeted, international gold rose sharply, and domestic gold futures opened higher the next day. However, the negative correlation between the dollar index and gold is not absolute, only that it is negative in the long run, but in many cases, the two are still positive or seemingly unrelated for a period of time. For example, at 20 1 1-20 12, the dollar soared, as did gold and silver, even once in the 1980s. The same is true in the short term in recent months, with the dollar and gold rising and falling together. To sum up, as a beginner, it is enough to know the basic things, and it is futile to judge the price of domestic futures with the US dollar index.