Train conductor Gao Jian talks with passengers aboard bullet train G184 from Qingdao of east China's Shandong Province to China's capital Beijing, Feb. 3, 2019. Staff members aboard some bullet trains departing from Qingdao held activities to extend greetings to passengers ahead of the Spring Festival, or the Chinese Lunar New Year, which falls on Feb. 5 this year. (Xinhua/Li Ziheng)?