Recently, the term "crispy college students" has become popular on the internet and social media platforms. The meaning of this' stem 'is that although some college students are not very old, they have many physical problems and have developed a' brittle skin phenomenon '...

COVID-19 is a highly infectious virus, and the following matters should be paid special attention to when it becomes positive again:1. Regular testing: After becoming positive again, it is necessary to conduct regular virus nucleic acid testing to ensure one's physical condition...