气温冲上20℃！这怕是个假“小寒”吧

Group 1 - The article highlights an unusual warm weather phenomenon in Changsha, with temperatures reaching around 20°C, leading to increased outdoor activities among residents [5][6]. - Citizens are taking advantage of the warm weather to dry clothes and enjoy the sun, indicating a shift in seasonal weather patterns [4][5]. - The Central Meteorological Observatory predicts that while cold air will frequently impact the region, most areas south of the Huabei will experience a rise in temperatures, with many places along the Yangtze River expected to reach around 20°C [5][6]. Group 2 - The forecast suggests that cities such as Hefei, Wuhan, Nanjing, Hangzhou, Changsha, and Nanchang may see maximum temperatures close to or reaching 20°C from January 14 to 16, with Changsha potentially challenging its mid-January record of 22.6°C [6]. - Despite the daytime warming, nighttime temperatures are expected to remain low, leading to significant temperature differences between day and night, which may require residents to dress warmly during the early morning and evening [6].