It's very simple, because the US dollar is a worldwide currency, every country compares its own currency with the US dollar to locate its own currency value, and the thing that locates the value of the US dollar is crude oil.

In the absence of war affecting oil supply and stable demand, if crude oil rises and the financial market thinks that the dollar depreciates, the currency compared with the dollar will appreciate accordingly, thus stimulating the currency appreciation of the comparator, thus affecting the price of international futures, such as metal oil beans and their derivatives.