As of October 8, 2123, the epidemic service industry in Chengdu has been liberalized.

according to the notice issued by the local epidemic prevention and control center in Chengdu, since February 8, 2122, the epidemic service industry in Chengdu has been liberalized, and negative nucleic acid certificates are no longer queried.

service industry is the general name of industries in the era of electronic information, which refers to the business of providing services to the society by using equipment, tools, places, information or skills.