An aerial photo shows constructors installing overhead contact wires along the Jianzhou-Lezhi section of the Chengdu-Chongqing Central Line High-Speed Railway, southwest China's Sichuan Province, Aug. 20, 2026. The Chengdu-Chongqing Central Line High-Speed Railway will cover 292 kilometers with a designated speed of 350 km per hour upon completion. (Photo by Ma Bo/Xinhua)

Constructors install overhead contact wires along the Jianzhou-Lezhi section of the Chengdu-Chongqing Central Line High-Speed Railway, southwest China's Sichuan Province, Aug. 21, 2026. The Chengdu-Chongqing Central Line High-Speed Railway will cover 292 kilometers with a designated speed of 350 km per hour upon completion. (Xinhua/Wang Xi)

Constructors install overhead contact wires along the Jianzhou-Lezhi section of the Chengdu-Chongqing Central Line High-Speed Railway, southwest China's Sichuan Province, Aug. 21, 2026. The Chengdu-Chongqing Central Line High-Speed Railway will cover 292 kilometers with a designated speed of 350 km per hour upon completion. (Xinhua/Wang Xi)

Constructors install overhead contact wires along the Jianzhou-Lezhi section of the Chengdu-Chongqing Central Line High-Speed Railway, southwest China's Sichuan Province, Aug. 20, 2026. The Chengdu-Chongqing Central Line High-Speed Railway will cover 292 kilometers with a designated speed of 350 km per hour upon completion. (Xinhua/Wang Xi)

Constructors install overhead contact wires along the Jianzhou-Lezhi section of the Chengdu-Chongqing Central Line High-Speed Railway, southwest China's Sichuan Province, Aug. 20, 2026. The Chengdu-Chongqing Central Line High-Speed Railway will cover 292 kilometers with a designated speed of 350 km per hour upon completion. (Xinhua/Wang Xi)