As for whether it is really irregular, "unscrupulous merchants" can generally be judged by the clothes of technicians. If the uniform you are wearing is very revealing or has some hints, then you should think more about it when doing the project. Will your behavior be illegal or criminal? Most of the technicians in ear-digging shops handed down by real regular hands are dignified and elegant, with sleeves that don't leak elbows and skirts below the knees. This also shows that it really relies on skills and technology to attract customers.
The local police station once banned the posture of "lying down and picking", which may reduce the comfort of service, but it can also prevent the phenomenon of "improper service". It helps to maintain a good social atmosphere and standardize competition.