Qingdao: In this photo released by Xinhua News Agency technicians work on a second generation disinfection robot in a technological company in Qingdao, eastern China’s Shandong Province on Tuesday, Feb. 11, 2020. Qingdao has called on technological companies to research, develop and refit disinfection robots which can replace human in disinfection operations for possible use in isolation wards of hospitals. AP/PTI(AP2_11_2020_000244B)