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At a meeting of the Standing Committee of the Political Bureau of the CPC Central Committee, Xi urged scientific efforts in virus source tracing. He also called for identifying the source of infection and the transmission routes at an earlier date, closely tracking the mutation of the virus and promptly developing strategies and measures on its prevention and control.

Xi recalled that since the outbreak of the novel coronavirus disease, Guterres has written to him to extend sympathies and express appreciation of China's prevention and control measures, and has publicly voiced support for China's anti-epidemic efforts on multiple occasions.

Progress does not come without sacrifice. Wuhan, with a population of more than 10 million, has been on lockdown for nearly 50 days. Many other cities in Hubei Province have also taken similar measures to prohibit or restrict inter-city movements.

Workers have disinfected bullet trains, the entrance and exits, waiting halls and platforms of the railway stations in advance.

BEIJING, March 23 (Xinhua) -- China urged the United States to stop politicizing COVID-19 and stigmatizing China, Chinese Foreign Ministry Spokesperson Geng Shuang said Monday.