Core Points - Starting from May 31, 2025, Beijing Subway will implement a dual-temperature carriage model across all lines except the Capital Airport Line, with a temperature difference of 2°C between strong cooling and weak cooling carriages to meet diverse passenger needs during summer [1][2] Group 1 - The dual-temperature carriage model will have different configurations based on the specific line, with designated strong and weak cooling carriages [1] - For example, on Line 5 and Yizhuang Line, the first three carriages will be strong cooling, while the last three will be weak cooling; other lines have similar arrangements [1] - Passengers will be guided to choose the appropriate carriage through signage and announcements [1] Group 2 - The subway company will implement dynamic management of carriage temperatures, adjusting daily based on weather, peak load rates, and passenger demand [2] - Regular maintenance of key air conditioning components will be conducted to enhance equipment reliability [2] - The company will also promote the dual-temperature model through offline activities and gather passenger feedback for continuous improvement [2] Group 3 - The subway company has completed the flushing of the air conditioning water system across the network, ensuring readiness for operation [2] - Additional cooling equipment has been installed at ground stations to improve the thermal environment [2] - The company aims to optimize service measures based on weather trends and passenger feedback to provide a more comfortable travel experience [2]