Core Viewpoint - The article discusses the popularity and practicality of wearing outdoor jackets, specifically "冲锋衣" (softshell jackets), in northern China during winter, questioning their necessity and effectiveness in urban settings [1][3][12]. Group 1: Definition and Standards - The national standard defines "冲锋衣" as outdoor clothing made from waterproof and breathable fabric, designed for outdoor activities [5]. - Key features distinguishing "冲锋衣" from regular jackets include waterproof breathability, colorfastness, and durability [8][9][10]. Group 2: Performance Evaluation - The performance of "冲锋衣" is evaluated based on three main criteria: waterproof breathability, colorfastness, and durability against wear and tear [6][9][10]. - The waterproof breathability is assessed through surface moisture resistance, hydrostatic pressure tests, and moisture permeability rates, with a grading system from I to II [8]. Group 3: Practicality in Northern China - The article argues that the waterproof feature is less relevant in northern winters, where conditions are typically dry and cold, questioning the need for such jackets [12][17]. - The focus for winter clothing in northern regions should be on wind resistance rather than waterproofing, as wind chill significantly affects perceived temperature [17][21]. Group 4: Recommendations for Winter Clothing - Practical suggestions for northern workers include choosing jackets that effectively block wind, with features like hoods and elastic cuffs, rather than prioritizing waterproof capabilities [17][21]. - The article also highlights common issues with winter clothing, such as noise and static electricity, suggesting solutions like using fabric softeners and maintaining humidity [22][24].

Core Points - Beijing is experiencing a significant drop in temperature due to cold air, with a maximum temperature of 13°C and a minimum of 0°C today [1] - The weather is expected to remain mostly sunny today, but strong winds are forecasted, with gusts reaching up to 6 levels [1] - There is a notable temperature difference between day and night, with morning temperatures dropping below 5°C [1] Weather Forecast - Today, Beijing will have clear skies with a north wind of 3 to 4 levels, and gusts around 6 levels, leading to a maximum temperature of 13°C and a minimum of 0°C [1] - Tomorrow's weather will also be predominantly sunny, but the night after will see an increase in cloud cover, potentially bringing light rain [1] - The temperature difference will remain significant, with tomorrow's minimum still below 5°C, necessitating warm clothing for early morning and evening outings [1] Safety Advisory - The meteorological department warns of strong gusts today, reaching up to 6 levels, and advises the public to take precautions against wind chill and falling objects [1]

Core Points - A strong cold air mass has swept across most parts of China since October 15, with temperatures expected to gradually rise after October 22, although it will still feel cool, necessitating warm clothing [1][3] - Snowfall occurred in Laiyuan County, Baoding, Hebei, with the lowest temperature dropping to 0°C, causing slippery roads and cautious driving [3] - Shanxi Province issued blue frost warnings, with temperatures in cities like Datong and Taiyuan also dropping to around 0°C, prompting agricultural departments to prepare for frost and protect crops [5] - In Jilin's Changbai Mountain, a rare natural phenomenon called evaporation fog was observed due to sudden temperature drops, creating a visually striking scene [7] - Zhejiang experienced a rapid temperature drop due to the cold air, with minimum temperatures falling to 13-15°C and strong winds causing a noticeable wind chill effect [9] - The upcoming frost descent on the 23rd marks a climatic turning point, with experts warning that blood pressure may rise, particularly among hypertensive patients, due to cold-induced vascular resistance [11]

Core Points - A strong cold air mass is affecting China, leading to significant temperature drops and precipitation across various regions [1][2][4] - The cold air is characterized by its intensity, wide range, and prolonged duration, impacting both northern and southern parts of the country [2][4] - Public advisories emphasize the need for warm clothing and caution during travel due to adverse weather conditions [1][6] Temperature Changes - From October 17, northern regions, including Beijing and the Northeast, will experience a notable drop in temperatures, with highs in Beijing expected to be between 11 to 13°C [10][15] - The lowest temperatures in some northern cities, such as Harbin, are forecasted to reach as low as 1°C, marking a new low since the start of autumn [2][10] - Southern regions, including Zhejiang and Guangdong, will also see maximum temperatures drop below 20°C by October 21 [2][4] Weather Warnings and Advisories - A blue cold wave warning was issued in Hebei, indicating significant temperature drops and potential impacts on visibility and road conditions [11][15] - Meteorological experts recommend the public adopt layered clothing strategies to cope with the cold [21][23] - Areas like Shanxi are preparing for early heating measures to ensure public comfort during the cold snap [16][20] Precipitation and Snowfall - Heavy rainfall has been reported in regions like Sichuan and Chongqing, with warnings about potential geological hazards [6][9] - Gansu province has experienced its first snowfall of the season, prompting road maintenance efforts to ensure safe travel [7][9] - The cold air mass is expected to bring rain and snow to various parts of the country, affecting agricultural activities [23]