On the fifth day, COVID-19 can't dance square dance. COVID-19 hasn't turned cloudy on the fifth day, and she still carries the virus. Square dancing is not recommended, and the oxygen consumption of square dancing will increase obviously, which is not conducive to COVID-19's recovery after infection. So COVID-19 can't dance the square dance on the fifth day. Square dance is the largest system in dance art, named after gathering in the square, which integrates self-entertainment and performance, with group dance as the main performance form and fitness as the main purpose.