Air environment automatic sterilizer robot Xiao Chuang, intelligent temperature measuring robot Da Bai and ground cleaning and disinfecting robot Xiao De have been in service for COVID-19 prevention and control during the annual Spring Festival travel rush in Hefei.

Ground cleaning and disinfecting robot Xiao De is seen at Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 18, 2022. (Xinhua/Liu Junxi)

Da Bai, an intelligent temperature measuring robot, measures a passenger's body temperature at the entrance of Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 18, 2022. (Xinhua/Liu Junxi)

Da Bai (R), an intelligent temperature measuring robot, measures a passenger's body temperature at the entrance of Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 18, 2022. (Xinhua/Liu Junxi)

Ground cleaning and disinfecting robot Xiao De is seen at Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 18, 2022. (Xinhua/Liu Junxi)

Ground cleaning and disinfecting robot Xiao De is seen at Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 18, 2022. (Xinhua/Liu Junxi)

Air environment automatic sterilizer robot Xiao Chuang sprays disinfectant at Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 18, 2022. (Xinhua/Zhou Mu)

Air environment automatic sterilizer robot Xiao Chuang sprays disinfectant at Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 18, 2022. (Xinhua/Zhou Mu)

Air environment automatic sterilizer robot Xiao Chuang sprays disinfectant at Hefei South Railway Station in Hefei, east China's Anhui Province, Jan. 18, 2022. (Xinhua/Zhou Mu)