今年下半年来最强冷空气来了！

Core Viewpoint - A strong cold air mass is set to impact China from October 14, leading to significant temperature drops across various regions, marking the most intense cold wave of the second half of the year [1][2]. Summary by Sections Cold Air Impact - The cold air will sweep from north to south, affecting regions including North China, Northeast China, Hunan, and Guizhou, with temperature drops exceeding 10°C in some areas [1][2]. - The cold air is expected to bring the lowest temperatures of the year so far, with an average temperature drop of 4 to 8°C across many regions [2]. Temperature Records - Major cities such as Urumqi, Harbin, Shenyang, and Jinan will see their highest temperatures of the year drop to new lows between October 14 and 20 [3][6]. - The cold air's influence will be particularly pronounced in the north, with significant temperature drops expected from October 15 to 19, and cities like Harbin and Shenyang experiencing single-digit maximum temperatures [6]. Southern Regions - In the south, the cold air will finally end the prolonged high temperatures, with cities like Nanjing and Changsha expected to see maximum temperatures of only 18°C and 16°C, respectively, around October 19 [6].