Core Points - The Daqin Railway has commenced its 2025 autumn concentrated repair construction, which will last for 20 days from October 7 to October 26, aimed at restoring railway facilities and ensuring energy supply for the upcoming winter and spring [1][3] Group 1: Construction Details - The Daqin Railway, spanning 653 kilometers from Datong in Shanxi to Qinhuangdao in Hebei, is China's first double-track electrified heavy-load coal transport line, with an annual coal transport capacity of approximately 400 million tons [3] - During the 20-day concentrated repair, the railway will experience a daily suspension of operations for 180 minutes, with tasks including the replacement of 107.438 kilometers of rail and 15,700 sleepers, as well as extensive maintenance work on tunnels, cables, and contact networks [3][4] - The construction will involve a total of 67 large construction machines and 114 small machines, with over 10,000 personnel organized into 126 construction teams to enhance efficiency and quality [3][4] Group 2: Coordination and Efficiency - To ensure the simultaneous execution of construction and transportation, the Daqin Railway has increased its workforce by over 900 personnel compared to the same period last year and added 14 large and 17 small maintenance machines [4] - The construction department has prepared a daily construction plan three days in advance, while the transportation department adjusts the transport scheme dynamically to maintain a daily average transport volume of over 1 million tons during the repair period [4]