The cause of the epidemic. In June 2022, Harbin Queen Beauty Training Institute sent a WeChat notice explaining the cause of the epidemic. The Queen Beauty Training Institution in Harbin could not continue to operate, and completely ended all its business. The closure of Harbin Queen Beauty Salon is the cause of the epidemic. Harbin, also known as Ice City, is the capital of Heilongjiang Province in China, a national historical and cultural city and an excellent tourist city in China.