Group 1 - Chengdu's rail transit construction is actively progressing during the National Day and Mid-Autumn Festival holiday, with multiple ongoing projects making significant advancements [1][2] - The construction of Line 18 Phase III has seen 4 station main structures completed, with 3 stations entering the electromechanical installation phase, and a total of 93.1% progress in shield tunneling [1] - The Chengde Line's Fengtai Sanlu Station has completed 98% of its main structure, with all concrete pouring preparations ready, and 120 construction workers on site during the holiday [1] Group 2 - The Chengmei Line construction is also progressing well, with 1 kilometer of track laid in the shield section between Qinhuangsi Station and Guantang Station, laying the groundwork for subsequent electromechanical and decoration works [2] - A total of 9 station main structures have been completed for the Chengmei Line, with 93% of the overall shield tunneling progress achieved, and the Meishan section's shield tunnel fully connected [2]

Group 1 - Chengdu has issued its first high-temperature orange warning signal for 2025, marking the official start of the high-temperature period [1] - China Railway Construction has implemented effective measures to ensure construction safety and progress during extreme heat, including adjusting work shifts and prohibiting work when temperatures exceed 38°C [1][2] - The construction site is equipped with clean drinking water and cooling beverages, along with medical supplies to ensure the health of workers [1] Group 2 - Significant progress has been made in Chengdu's rail construction, including the successful electrification and transfer of the Chengdu Metro Line 13 Phase I, and the completion of major structures at various stations [2] - The labor unions at China Railway Construction will continue to enhance heat prevention measures and provide support to frontline workers to ensure their health and safety while advancing project construction [2]