I don't understand why Suzhou Samsung Household Appliances doesn't want its employees to leave. Solve it.

Because Samsung's salary is high, and since you left your job, you will not be stable in the future. Maybe he is considering stability! I have a colleague who is the same. He can go to work after the interview at Samsung. I suddenly told him no, because he had left his job before. In fact, you can go to other factories, not necessarily Samsung!