Mechanic Liu Liang checks a bullet train at the Wanzhou North Railway Station in Chongqing, southwest China, Jan. 12, 2017. According to Liu, it is vital to check the train carefully in order to maintain the smooth operation of the train from Wanzhou to Chongqing. Since its opening, the intercity Chongqing-Wanzhou high-speed railway is about to greet its first Spring Festival travel rush between Jan. 13 and Feb. 21. The Spring Festival, or Chinese Lunar New Year, falls on Jan. 28 this year. The festival is the most important occasion for family reunions. (Xinhua/Liu Chan)