According to the National Development and Reform Commission, the domestic refined oil price adjustment window will open at 24:00 on May 21. Monitoring by the Price Monitoring Center shows that during the current round of oil price adjustment (from 24:00 on May 8 to 24:00 on May 21), international oil prices have seen more increases than decreases. Starting from 24:00 on May 21, domestic gasoline and diesel prices will be raised by 75 yuan and 70 yuan per ton, respectively. On average nationwide, 92-octane gasoline, 95-octane gasoline, and 0-diesel will each increase by 0.06 yuan per liter. Filling a 50-liter tank with 92-octane gasoline will cost an extra 3 yuan.