Core Insights - The construction of the Hangzhou Metro Line 18 is facing extreme heat conditions, with temperatures in the underground construction site reaching nearly 39°C [5][6] - Workers, such as scaffolder Zhang Sen, are required to perform physically demanding tasks under these conditions, emphasizing the importance of safety and quality in their work [5][6] Group 1: Construction Conditions - The underground construction site is described as a "giant steamer," with temperatures exceeding 50°C on steel pipes, making working conditions challenging [5][6] - Workers are required to climb up and down scaffolding multiple times daily, completing approximately 300 cubic meters of scaffolding setup [5] Group 2: Safety Measures - To combat the heat, the project team has implemented a work schedule that allows for breaks during the hottest parts of the day, focusing on safety and health [6][7] - The Hangzhou Municipal Construction Committee is actively enforcing measures to ensure worker safety during high temperatures, including optimizing work hours and improving working conditions [7] Group 3: Worker Welfare - Workers report improvements in their working conditions, including timely salary payments and increased focus on safety training and health assessments [7] - The availability of resources such as ice-cold water and medical supplies has significantly improved, contributing to better worker morale [7]