Why do many shops put up advertisements in front of them, but they are full when they go in, but the contents of the advertisements are still there and have not been taken away?

The first reason: there are real employment needs, and the interviewer thinks you are not suitable for this job. The second reason: the old employee resigned, and the boss didn't want to approve it, but he had to recruit people according to the regulations. The interviewer is valuable and will definitely stay. Referring to the first reason, the boss thinks it is inappropriate and will say that he has recruited enough people. The third reason is that recruiting people to advertise gives people the illusion that business is good.