Group 1 - The core viewpoint of the article highlights a significant increase in beef and lamb prices during the winter season, contrasting with the price drop experienced last year [1][5] - In Nanjing, retail prices for beef and lamb have risen by 3-5 yuan per jin compared to the same period last year, with beef prices returning to the "40s" [1][5] - The average national beef price reached 71.33 yuan per kilogram, a year-on-year increase of 7.3%, while lamb prices averaged 71.59 yuan per kilogram, up 2.4% [5] Group 2 - Factors contributing to the price increase include adjustments in production cycles, where farmers eliminated some stock during last year's low prices, leading to tighter current supply [5] - Rising costs of feed and transportation have also supported the price increase, alongside the seasonal rise in demand for beef and lamb during winter [5] - Industry experts anticipate that beef and lamb prices may continue to fluctuate at high levels as the New Year and Spring Festival approach [5]