A passenger buys bottled water by scanning a QR code on train G8516 from Chongqing Municipality, southwest China, to Chengdu, capital of southwest China's Sichuan Province, Feb, 9, 2018. China's 40-day Spring Festival travel rush, which concluded on March 12, witnessed 2.97 billion passenger trips, according to official data. The traffic is basically the same as that of last year, according to the Ministry of Transport. (Xinhua/Liu Chuan)