A man receives a dose of the COVID-19 vaccine at a vaccination site in Daxing District of Beijing, capital of China, Feb. 21, 2021. (Xinhua/Peng Ziyang)BEIJING, March 3 (Xinhua) -- More than 52 million doses of COVID-19 vaccines had been administered across China as of the end of February, Guo Weimin, the spokesperson for the fourth session of the 13th National Committee of the Chinese People's Political Consultative Conference, told a press conference on Wednesday.