I am willing to use our youth to protect this prosperous China. This is the greatest wish recorded by Zhang Jingjing, an ordinary Shandong nurse aiding Tibet, in the Diary of War and Epidemic. In 2020, a sudden COVID-19 epidemic swept through Wuhan and spread all over the country. In this epidemic prevention exam, young people in China jumped up again and handed in qualified answers with practical actions. Of the more than 42,000 medical staff who rushed to Hubei,1.20 thousand were born after 1990, and a considerable part of them were born after 1995 or even after 00.