What do beautiful sheep stand for in COVID-19?

The beautiful sheep in COVID-19 represent people who don't know COVID-19. This is a popular expression on the Internet recently. People who are not infected with COVID-19 virus are American sheep, asymptomatic infected people are lazy sheep, and Jonie and Boiling Sheep who have been diagnosed with mild COVID-19 symptoms. After optimizing the defense measures, everyone should do a good job in personal protection norms and self-monitoring. Once you have symptoms such as fever and cough, you should go directly to the nearest medical institution for medical treatment.