[Core area of heavy rainfall in south China shifts to southern China and other regions; areas south of the Yangtze River experience temperature drop] Today (May 23), the area of heavy rainfall in south China will shift to southern China and other regions, with torrential rain or extremely heavy rainfall expected in parts of Guangxi, Guangdong, and Fujian. Meanwhile, due to the influence of cold air and rainfall, areas south of the Yangtze River will also experience a temperature drop. Temperatures in many regions in the north and south will shift from being significantly above normal to below normal, with areas having a maximum temperature above 30℃ only remaining in southern China and the Sichuan Basin.