The company wants to transfer my post. As an employee, do I have to obey the arrangement?

Actually, it depends. If the position adjusted by the company is not difficult to accept, even if there is a gap with this major, I think it is acceptable as far as possible. After all, the company is dominant in this matter. However, other requirements, such as salary reduction, are definitely unacceptable, but everything agreed in the contract can be carefully studied, which is acceptable and which is unacceptable. Read more about labor law. Although there are policies in the world, there must be countermeasures in the future. Don't be a soft persimmon, it won't do any good.