In the golden autumn season, the fragrance of osmanthus floats. The past summer was rather uneasy, with the Delta variant of novel coronavirus (SARS-CoV-2) infected in some provinces and cities in China; At the same time, the academic analysis of epidemic prevention and control methods has aroused the attention of public opinion, and it has been rampant for a while. Professor Liu Youning, the editor-in-chief essay column of this issue, made a generous statement: "If you live and die for the benefit of the country, how can you avoid it because of misfortune and blessing?" On the one hand, reviewing the ambitions and pride of your comrades during the war against the epidemic last year, it is soul-stirring; On the other hand, it once again emphasizes the advanced nature and superiority of China's anti-epidemic experience. At the end of the article, comparing the different circumstances of the two patients, Professor Liu feels a lot of emotion, and his words are serious, so he recommends reading.
