A disinfection and temperature-checking robot patrols to disinfect the waiting hall of the Shenyang North Railway Station in Shenyang, capital of northeast China's Liaoning Province, Jan. 28, 2021.Photo:Xinhua

A disinfection and temperature-checking robot checks the body temperature for a passenger in the waiting hall of the Shenyang North Railway Station in Shenyang, capital of northeast China's Liaoning Province, Jan. 28, 2021.Photo:Xinhua

A disinfection and temperature-checking robot patrols to disinfect the waiting hall of the Shenyang North Railway Station in Shenyang, capital of northeast China's Liaoning Province, Jan. 28, 2021.Photo:Xinhua

A disinfection and temperature-checking robot checks the body temperature for a passenger in the waiting hall of the Shenyang North Railway Station in Shenyang, capital of northeast China's Liaoning Province, Jan. 28, 2021.Photo:Xinhua