The COVID-19 virus is strange: Only my son got tricked into getting a shot of the Lanzhou biological vaccine because he needed it for college entrance exams; I firmly disagreed with the second shot. The family disagreed with my little daughter getting vaccinated, and the school said she couldn't attend if she didn't get vaccinated. I said if she can't go, then she won't go; she didn't attend school for a week, and later got a urticaria certificate, and that was the end of it. After the sudden reopening, my son, who got vaccinated, tested positive overnight, but his symptoms were very mild. My wife, little daughter, and I did not test positive, while almost every household in the community had tested positive.