After a corona was discovered in the body of a staff worker at a primary school in China, students were kept for many hours inside the school. At that time, no one was permitted to leave or enter the school. When the parents received the news, they raced to the school and congregated in front of the school, waiting for their children. They should learn about the situation about midnight. It was then discovered that all of the children at the school had been tested for Kavid and were instructed to stay inside the school all night until the results of the test were received. The students are thought to be between the ages of seven and twelve.