A combo photo shows a train running along seaside area in 1999 (up) and a bullet train running towards Nanning, Feb. 11, 2018, south China's Guangxi Zhuang Autonomous Region. The total mileage of railway lines in Guangxi Zhuang Autonomous Region has reached 5,191 km from 1,346.3 km in 1958. The railway has become a transportation artery and brought economic opportunities to Guangxi. (Xinhua)