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PRELUDErnAt the beginning of the Chinese new year of the Gengzi Rat, we should all be reuniting with our families. With the lant flowers in full bloom, how could an epidemic invade the land of China? We saw the river city was sinking; haze began to rise on all sides, and the Coronavirus Disease-2019 (COVID-19) began to ravage Wuhan. Since the outbreak of the epidemic, General Secretary Xi Jinping has attached great importance to personally directing and deploying resources.