(250924) -- CHONGQING, Sept. 24, 2025 (Xinhua) -- Workers work at the construction site of a double-track grand bridge along the Chongqing-Wanzhou high-speed railway over the Wubu River in southwest China's Chongqing Municipality, Sept. 24, 2025. Contracted by China Railway 12th Bureau Group Co., Ltd., the main span of the grand bridge finished its closure on Wednesday, laying a foundation for the opening of the whole line on schedule. (Xinhua/Tang Yi)