Group 1 - The article discusses the weather forecast for February 4, indicating a transition to warmer temperatures with varying conditions across different regions of Sichuan Province [1] - The forecast predicts cloudy weather for most of the basin, with scattered light rain in the southwestern mountainous areas and possible light snow or rain in the northwestern and northern parts of Ganzi and Aba prefectures [1] - A new cold air mass is expected to bring a round of rain and snow to southern China starting from February 5, prompting the public to pay attention to weather updates and adjust clothing accordingly [1]

Group 1 - The cold wave in China has ended, leading to a warming trend across the country, with southern regions experiencing a more stable and significant rise in temperatures [1] - The highest temperature line of 10°C is expected to move northward to the Yangtze River, with many areas in Jiangnan and South China seeing temperatures rise above 20°C in the coming days [1] - Northern regions will experience a slower warming trend, particularly in Northeast China, where temperatures will remain lower than usual for this time of year [1] Group 2 - As the cold wave concludes, most of Central and Eastern China will enter a precipitation hiatus, while the western regions will see increased snowfall [3] - Strong snowfall is anticipated in western Xinjiang and western Tibet, with today being the peak period for snowfall, including heavy to blizzard conditions in some areas [3] Group 3 - No further cold wave events are expected in the coming days, but weak cold air will frequently impact the country [5] - From Sunday to early next week, a new cold air mass will cause temperatures to drop by 4-6°C in Jiangnan and areas north of it, with localized drops exceeding 8°C [5] - A significant rain and snow event is forecasted for Central and Eastern China, although the intensity of precipitation will be low, with light snow or sleet in northern regions and light to moderate rain in southern areas [5]