BEIJING, July 24, 2016 (Xinhua) -- A high-speed train runs in Bose City, south China's Guangxi Zhuang Autonomous Region, July 22, 2016. There have been more than 5 billion passenger trips on China's world-renowned bullet trains in eight years, according to new data from the national rail operator. Since its debut in 2008, China's high-speed railway (HSR) has seen an average annual growth of over 30 percent in passenger trips, the China Railway Corporation (CRC) said on Thursday, the day after China announced plans to double its length of HSR by 2025. (Xinhua/Wei Wanzhong)