寒潮蓝色预警：黑龙江吉林等地部分地区将现剧烈降温

Group 1 - The central meteorological station issued a blue cold wave warning due to the influence of cold air, predicting a temperature drop of 6 to 10 degrees Celsius in several regions including eastern Inner Mongolia, most of Heilongjiang, Jilin, eastern Liaoning, northern Henan, and central-northern Jiangsu from February 22 to February 23 [1] - Specific areas such as central and southern Heilongjiang and eastern Jilin may experience a temperature drop of 12 to 14 degrees Celsius, with localized drops exceeding 14 degrees Celsius [1] - The minimum temperature line of 0 degrees Celsius is expected to move southward to the eastern Huanghuai, southern North China, and central Shaanxi by February 23 [1] Group 2 - Recommendations for defense against the cold wave include government and relevant departments preparing for cold wave conditions according to their responsibilities [4] - Individuals are advised to wear additional clothing for warmth [4] - Protective measures should be taken for tropical crops and aquatic products [4] - Preparations for wind protection are also recommended [4]