In March 2020, the prevention and control of COVID-19 pandemic have entered a new stage. The response levels of many provinces in China are downgraded, and the prediction model of the Zhong Nanshan Academician team shows that the pandemic may end in June. All signs show that the COVID-19 Pandemic has been effectively prevented and controlled in China. This protracted "national war against COVID-19 pandemic" has appeared an apparent turnaround. In contrast to the China’s situation, the pandemic in foreign countries is getting worse. As of March 18, the cumulative infections abroad have exceeded 80,000, causing nearly 3,000 deaths. The pandemic in Italy, Iran and other countries is even more severe. As of March 18, the cumulative fatalities worldwide are over 5,000. Although the main battlefield against pandemic has been transferred from China to foreign countries, the situation of pandemic prevention and control in China is still grim and complex since overseas impor