换季式降温来了！回家路上，千万注意安全~

Group 1 - The article highlights that the beginning of the Spring Festival holiday in China is marked by increased precipitation, with regions like Jianghan and Jiangnan experiencing rain and potential strong convective weather, while areas such as Shaanxi and Henan may see snowfall [1][2] - A cold wave is expected to move southward, impacting the central and eastern regions of China, with local temperature drops exceeding 12°C in some areas [9][10] - The Central Meteorological Observatory forecasts that from February 15 to 17, temperatures in various regions, including Inner Mongolia and parts of Jiangnan, will drop by 6 to 10°C, with some areas experiencing drops of over 12°C [10] Group 2 - The article warns of the possibility of severe convective weather during this round of precipitation, particularly in northern Jiangnan and Jianghan, which may include thunderstorms, mixed winds, and localized hail [8] - The article notes that since mid-February, temperatures in most of the central and eastern regions have been rising, with some areas experiencing their warmest day of the year [10] - After the cold wave, temperatures are expected to rise again, with many places likely to reach 20°C or higher during the first five days of the Lunar New Year [10]