Sanitation workers clean a street in Hohhot, capital of north China's Inner Mongolia Autonomous Region, Feb. 4, 2019. People from various industries stick to their posts on the eve of the Spring Festival which falls on Feb. 5 this year. (Xinhua/Ding Genhou)

Railway workers refill a water tank on train at Shanghai Hongqiao Railway Station in Shanghai, east China, Feb. 4, 2019. People from various industries stick to their posts on the eve of the Spring Festival which falls on Feb. 5 this year. (Xinhua/Chen Fei)

Train attendant Wang Jing (R) checks tickets for a passenger at a platform of Yinchuan Railway Station in Yinchuan, northwest China's Ningxia Hui Autonomous Region, Feb. 4, 2019. It's the third year that Wang has stuck to her post during the Spring Festival. People from various industries stick to their posts on the eve of the Spring Festival which falls on Feb. 5 this year. (Xinhua/Feng Kaihua)

Bus driver Shao Hui is on duty in Yinchuan, northwest China's Ningxia Hui Autonomous Region, Feb. 4, 2019. It's the tenth year that Shao has stuck to his post during the Spring Festival. People from various industries stick to their posts on the eve of the Spring Festival which falls on Feb. 5 this year. (Xinhua/Feng Kaihua)

A nurse checks the physical condition of a baby at an intensive care unit in a care center for mothers and children in Suixian County, central China's Henan Province, Feb. 4, 2019. People from various industries stick to their posts on the eve of the Spring Festival which falls on Feb. 5 this year. (Xinhua/Liu Junxi)

Railway attendants check tickets at Yinchuan Railway Station in Yinchuan, northwest China's Ningxia Hui Autonomous Region, Feb. 4, 2019. People from various industries stick to their posts on the eve of the Spring Festival which falls on Feb. 5 this year. (Xinhua/Feng Kaihua)

A sanitation worker cleans trash along a street in Wuhan, capital city of central China's Hubei Province, Feb. 4, 2019. People from various industries stick to their posts on the eve of the Spring Festival which falls on Feb. 5 this year. (Xinhua/Zhang Duan)