Illegal. Non-medical qualified units use regular medical equipment, which belongs to illegal medical practice. Ultrasonic cannons in beauty salons are fakes and only sold to hospitals with medical qualifications. Beauty salons have no medical qualifications and surgeons have no qualifications, so it is illegal to practice medicine. The word beauty can be understood from two angles. The first choice is "capacity", followed by "beauty". "Rong" includes three meanings: face, grace and decoration. "Beauty" has two meanings: adjective and verb. Adjectives indicate that the result and purpose of beauty are beautiful and beautiful; Verbs express the process of beauty, that is, beautification and change.