This is also a measure to ensure energy security, that is to say, after the opening of oil futures, you can directly trade futures with foreign countries, and these foreign countries directly trade futures, so that you don't have to be subject to the US dollar through RMB settlement, and your energy independence will be further improved. Recently, it may be oil development and environmental protection. The effect of this contradiction makes the price very unstable. We can stabilize its price through oil futures and buy it when the price is low.