Photo taken on Feb. 1, 2018 shows bullet trains at a maintenance station in Changchun City, northeast China's Jilin Province. The 2018 Spring Festival travel rush, known as the Chunyun, started on Thursday and will last till March 12. About 2.98 billion trips are expected to be made during the Chunyun. The Spring Festival, or Chinese Lunar New Year, falls on Feb. 16 this year. (Xinhua/Zhang Nan)