Since imported products may have been frozen for several years, domestic products should be fresh. It is understandable that fresh things are generally much more expensive than frozen long-distance transportation. The price of Australian mutton began to decline, falling to 29 cents per kilogram in 7 yuan at the beginning of 12, rising rapidly in the middle of 12, and reaching the peak of 40 cents per kilogram in 6 yuan in March 2020. After a slight decline, the price began to rise, and by the end of 202 10, it was 40 cents per kilogram of 5 yuan.