Workers grind the rails in Wuhan, central China's Hubei Province, Jan. 31, 2018. Workers check the rail to ensure the safety of passengers. 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/Xiong Qi)