1, supervisors born after 90, experienced ones don't go in. It's really not suitable. Fresh graduates can go in and have a look, springboard. You won't stay if you have experience. Many graduates are cheap and easy to use. 2, office staff, technology is abroad, you just go in and do chores; Graduates can do it. If the store owner works in a supermarket, most of them work part-time at school, mainly after 90. Tired from work, I need to work all night, and there is no holiday for several weeks. The interests of various departments compete with each other, and there are many disputes among employees. Disharmonious. The above can be combined with your own considerations.