1, the RMB has been depreciating against the US dollar. At the beginning of the year, 1 USD was converted into RMB in 6.3 yuan, and now 1 USD will be converted into RMB in 7 yuan. Naturally, when the RMB depreciates, there will be less things to buy, and crude oil futures will increase in price.
2. The domestic crude oil market is highly monopolized, and three barrels of oil have great bargaining power in China. They don't want domestic oil prices to fall.