A staff member gathers prohibited goods at Changsha Railway Station in central China's Hunan Province, on Jan. 16, 2019. Railway stations all over the country have stepped up preparation work and security check to guarantee the forthcoming Spring Festival traffic rush. (Xinhua/Chen Zeguo)

Staff members with Suzhou station of China Railway Shanghai Group Co. Ltd. learn sign language to better communicate with hearing-impaired passengers in Suzhou, east China's Jiangsu Province, Jan. 16, 2019. Railway stations all over the country have stepped up preparation work and security check to guarantee the forthcoming Spring Festival traffic rush. (Xinhua/Li Bo)

Staff members with Suzhou station of China Railway Shanghai Group Co. Ltd. learn sign language to better communicate with hearing-impaired passengers in Suzhou, east China's Jiangsu Province, Jan. 16, 2019. Railway stations all over the country have stepped up preparation work and security check to guarantee the forthcoming Spring Festival traffic rush. (Xinhua/Li Bo)

Passengers watch an explosive disposal robot in Wuhan, central China's Hubei Province, Jan. 16, 2019. Railway stations all over the country have stepped up preparation work and security check to guarantee the forthcoming Spring Festival traffic rush. (Xinhua/Cheng Min)

Passengers watch a police drill in Wuhan, central China's Hubei Province, Jan. 16, 2019. Railway stations all over the country have stepped up preparation work and security check to guarantee the forthcoming Spring Festival traffic rush. (Xinhua/Cheng Min)

A policeman teaches passengers to recognize fake tickets in Wuhan, central China's Hubei Province, Jan. 16, 2019. Railway stations all over the country have stepped up preparation work and security check to guarantee the forthcoming Spring Festival traffic rush. (Xinhua/Cheng Min)

A mechanic checks the windshield wipers of a train in southwest China's Chongqing, Jan. 16, 2019. Railway stations all over the country have stepped up preparation work and security check to guarantee the forthcoming Spring Festival traffic rush. (Xinhua/Wang Quanchao)

Staff members with Hebidong railway station of China Railway Zhengzhou Group Co. Ltd. take part in an emergency drill in central China's Henan Province, Jan. 16, 2019. Railway stations all over the country have stepped up preparation work and security check to guarantee the forthcoming Spring Festival traffic rush. (Xinhua/Li An)

Staff members with Hebidong railway station of China Railway Zhengzhou Group Co. Ltd. learn sign language to better communicate with hearing-impaired passengers in central China's Henan Province, Jan. 16, 2019. Railway stations all over the country have stepped up preparation work and security check to guarantee the forthcoming Spring Festival traffic rush. (Xinhua/Li An)

A staff member works in the monitoring room of Changsha Railway Station in central China's Hunan Province, on Jan. 16, 2019. Railway stations all over the country have stepped up preparation work and security check to guarantee the forthcoming Spring Festival traffic rush. (Xinhua/Chen Zeguo)