Before revision:  we then employ a mathematical model of infectious disease spreading to calculate some key indicators of the epidemic control, evaluate the effectiveness of some epidemic prevention and control measures, and finally, advise on public policies and living behaviors of the general public, in the mist of this historic event .
After revision:  we then employ a mathematical model of infectious disease spreading to calculate some key indicators of the epidemic control, evaluate the effectiveness of some epidemic prevention and control measures, and more importantly, to offer a few tips on preventive measures .