Group 1 - The core viewpoint of the article highlights the significant temperature fluctuations in the central and southern regions of China, with a notable increase in daytime temperatures while nighttime temperatures remain low [3][4]. - From January 12 to 16, temperatures in regions such as Hefei, Wuhan, Nanjing, Hangzhou, Changsha, and Nanchang are expected to approach or reach 20°C, with Changsha potentially challenging its mid-January record of 22.6°C [3][4]. - The article notes that the diurnal temperature range in many areas will exceed 15°C, with some locations surpassing 20°C, indicating a stark contrast between warm days and cold nights [4]. Group 2 - The weather forecast for Hubei province indicates a gradual increase in temperatures over the next week, with maximum temperatures rising to 14-19°C and minimum temperatures ranging from -1 to 5°C [1][5]. - The article provides a detailed seven-day weather forecast for various cities in Hubei, showing specific temperature predictions for each day [4].

Group 1 - The core viewpoint of the articles highlights the frequent rain and snow in the Tibetan Plateau, with local areas experiencing heavy snowfall or blizzards, necessitating precautionary measures [1][2][5] - The Central Meteorological Administration forecasts that from October 28 to 30, parts of the Tibetan Plateau will see moderate to heavy snow, with local areas facing blizzards [2][4] - In the central and eastern regions of China, precipitation is expected to increase, with specific areas experiencing moderate to heavy rain [2][3][4] Group 2 - The temperature across most of China is expected to rise, with the highest temperatures reaching above 20°C in southern North China and over 25°C in parts of Jiangnan and South China [6] - There will be significant diurnal temperature variations, particularly in northern regions, where differences may exceed 10°C, and in some areas, close to 20°C [6] - The presence of cold air will lead to the development of fog and haze in certain regions, with moderate haze expected in parts of North China and the Huanghuai region [6]

Summary of Key Points Core Viewpoint - The recent cold air mass has led to a significant drop in temperatures in Hangzhou, marking the lowest temperatures of the year so far, with a minimum of 14.2°C and a maximum of 16.8°C recorded [2]. Weather Conditions - The cold air is characterized as "dry cold," which not only brings lower temperatures but also reduces humidity and eliminates rainy weather, leading to clearer skies in the following days [3]. - Wind conditions have been notable, with sustained strong northerly winds causing a significant wind chill effect, making the perceived temperature feel much colder than the actual temperature [2]. Temperature Fluctuations - A gradual warming trend is expected to begin on Thursday, with temperatures potentially rising to 25-26°C by the end of the month, although the increase will not be immediate [3]. - The diurnal temperature range is set to increase, with morning temperatures dropping to 13-14°C and afternoon highs reaching just above 20°C, indicating a clear "cold mornings, warm afternoons" pattern [3].