How can I protect my rights when the project manager is transferred for no reason?

You can only talk to the leader of the leader now. Obviously, it is almost impossible for you to work here in the future. 1 The project manager will give you little shoes to wear, so you can't adapt to the new project manager system (not necessarily good, but he is the leader). I suggest you try to change other positions, prepare for the worst, make the best preparations, find a leader or a special human resources department leader, and it is best to coordinate with the company and give you compensation for leaving. Besides, find a new home quickly. It's not easy to stay here with little people here. If you offend a gentleman, don't offend a villain.