Does anyone know what are the restrictions on going to other Schengen countries after obtaining the status of buying a house in Greece? Can I fly directly from China to other countries?

After obtaining Greek residence status by buying a house, you can freely enter and leave other Schengen countries without applying for a Schengen visa. You can go to other Schengen countries as a Greek resident and stay for 3 months every six months; If you are employed in other EU countries, you can stay in the local area by applying for a work permit; If you are admitted to other EU universities, you can study locally by applying for a study visa.