Group 1 - The core focus of the article is on the "ice-breaking team" of the Taiyuan Railway Bureau, which plays a crucial role in ensuring the safety of train operations during winter by removing ice from railway tunnels [2][3][4]. - The team, primarily composed of young workers born after 2000, begins their duties in late November and continues for four months, monitoring and clearing ice from seven tunnels [2][4]. - Each day, the team starts their work at 6 AM, walking over 9 kilometers to inspect and clear ice, demonstrating their commitment to passenger safety [2][3]. Group 2 - The article highlights the emotional aspect of the job, as new team members will spend the Spring Festival away from their families, yet they express pride in their work to ensure the safety of every train and passenger [2][4]. - The team is trained in specific techniques for ice removal, indicating a structured approach to their responsibilities [6].

Core Viewpoint - The article highlights the efforts of a team working in extreme cold conditions to remove ice from railway tunnels, ensuring safety and uninterrupted train operations during winter. Group 1: Operations and Safety Measures - The team, led by Li Hongbing, is focused on identifying and addressing ice accumulation in key tunnels to prevent disruptions in train services [1] - The operation involves using an 8-meter ice-breaking rod to safely remove ice pillars that pose a risk to the contact network [1][5] - A total of 35 ice removal tasks were completed across 21 tunnels within 120 minutes, demonstrating efficiency in operations despite harsh weather conditions [5] Group 2: Working Conditions - The team faced severe cold, with temperatures dropping to -12°C, making the working environment challenging [1] - Workers employed various techniques to keep warm, including taking breaks in the vehicle and using hand-warming methods [2][3] - Despite the cold, the team successfully managed to complete their tasks, showcasing their resilience and commitment to safety [5]