i have x1 visa but i changed the university from jinzhou to guangzhou what am i supposed to do?

You need to ask for a dropout certificate from your current school in Jinzhou, and then your new school in Guangzhou needs to get you the JW201 or JW202 form and the acceptance letter. You also need to provide the relevant materials including your passport and the application form. And then go to the exit and entry administration of the local PSB in Guangzhou to renew your residence permit.