Train tickets for several high-demand routes in China have already sold out for the upcoming three-day New Year holiday. As of 10 a.m. today, data from travel platform Qunar shows no remaining tickets for routes including Beijing-Harbin, Beijing-Zhengzhou, Beijing-Wuhan, Shenzhen-Shantou, Chengdu-Yibin, Chengdu-Xichang, Ningbo-Shanghai, Harbin-Mudanjiang, Qingdao-Yantai, and Qingdao-Zibo.