At 20:20 on March 11th, Huangnanzhou Meteorological Observatory issued a blue warning for a cold wave: it is expected that from 10:00 on March 12th to 10:00 on March 15th, there will be a cold wave weather in Jianzha, Tongren, Zeku, and Henan, with temperatures dropping by 8-12 ℃ and locally reaching over 14 ℃. The lowest temperature will be less than or equal to 0 ℃, and the average wind speed will reach level 4 or above. Cold wave weather has a certain impact on agricultural and animal husbandry production, energy supply, and public health. Please pay attention to prevention. Defense guidelines: 1. The government and relevant departments should do a good job in preventing cold waves according to their responsibilities; 2. Individuals should pay attention to adding clothes to keep warm, and people who are sensitive to temperature changes should try to minimize going out; 3. Take protective measures for agriculture, forestry, animal husbandry, and animal husbandry.