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. 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. [Photo by Liu Junxi/Xinhua]
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