[There are heavy rainfalls and strong convection in many places in the south, and a new wave of cold air will appear from tomorrow] October 14th, today (October 14th), affected by the cold air, the temperature in the Northeast continues to drop, and the lowest temperature in Harbin and other places will fall below freezing for the first time in the second half of the year. Starting tomorrow, a new wave of cold air will appear, affecting a wide range of areas. From this weekend to the beginning of next week, temperatures north of the Yangtze River will hit record lows. Affected by the intersection of cold and warm air, there will be heavy rainfall in many places in the south today and tomorrow. The rainfall in some areas of Jianghuai and Jiangnan will be accompanied by strong convective weather.