Attendant Yong Wanjun tells a story to his grand-daughter on train K46 traveling from southeast China's Fuzhou to capital city Beijing, Feb. 8, 2018. Train K46 was the first train running from southeast China's Fujian Province to Beijing when it began operation 52 years ago. A single trip of train K46 takes nearly 36 hours. (Xinhua/Lin Shanchuan)