High-speed rail connects major cities in southwest China's mountainous regions

(191216) -- CHENGDU, Dec. 16, 2019 (Xinhua) -- Aerial photo taken on Dec. 16, 2019 shows a bullet train running on the Chengdu-Guiyang railway in southwest China's Sichuan Province. The 648-km-long Chengdu-Guiyang high-speed rail line, an important part of China's ambitious plan to build a high-speed railway network across the country, was launched on Monday. The rail line links Guiyang, capital of southwest China's Guizhou Province, and Chengdu, capital of Sichuan Province. (Xinhua/Jiang Hongjing)