Train crew member Liu Hengduo checks the fire extinguishers on the train G24 from Hefei of east China's Anhui Province to Beijing, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Photo by Zhou Mu/Xinhua)

Train crew member Liu Hengduo hangs up a notice card on the train G24 from Hefei of east China's Anhui Province to Beijing, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Xinhua/Han Xiaoyu)

Train crew member Wang Yuxin gets prepared before departure at the Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Xinhua/Han Xiaoyu)

Train crew member Li Xinyan clocks in at the Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Photo by Zhou Mu/Xinhua)

Train crew members queue up at the Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Xinhua/Han Xiaoyu)

Train crew member Wang Yuxin arranges the luggage on the train G24 from Hefei of east China's Anhui Province to Beijing, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Photo by Zhou Mu/Xinhua)

Train crew member Liu Hengduo arranges the luggage on the train G24 from Hefei of east China's Anhui Province to Beijing, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Photo by Zhou Mu/Xinhua)

Train crew members get prepared before departure at the Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Xinhua/Han Xiaoyu)

Train crew member Liu Hengduo checks tickets on the train G24 from Hefei of east China's Anhui Province to Beijing, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Photo by Zhou Mu/Xinhua)

Five young train crew members pose for a group photo at the Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Xinhua/Han Xiaoyu)

Train crew members Diao Yuting, Li Xinyan and Wang Yuxin (from L to R) attend a morning meeting at the Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 12, 2020. A group of young train crew employees from the Hefei section of China Railway Shanghai Group Co., Ltd. made their debut during the Spring Festival travel rush recently. Five out of six members from this team were born in 2000. On Jan. 12, the post-2000s team started their work during the country's largest annual migration on the train G24 from Hefei to Beijing. (Xinhua/Han Xiaoyu)