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Recently,a well-designed,exploratory clinical trial on the management of patients with coronavirus disease 2019 (COVID-19) by a Chinese medicine(CM) Keguan-1 has been conducted by Dr.XIAO Xiao-he and his colleagues.(1) For the emergency of COVID-19 treatment,conventional new vaccine and new drug development is a money consuming and time demanding process.Consequently,it is a realistic choice to explore potential therapeutic drugs among repurposing drugs such as hydroxychloroquine and remdesivir.