I have worked in the property for a year and a half, and I have not signed a contract or been insured. The company suddenly asked me to leave for no reason. How can I protect my rights and interests?

Try to get as much evidence of your work as possible, such as attendance records, signed documents, work permits, and company notices on documents.

Then apply to the local labor arbitration department for labor arbitration, and at the same time report the illegal employment behavior of the enterprise to the local labor inspection department (which can threaten the enterprise in the future)

According to the Labor Contract Law, if actual employment is equivalent to labor relations, you can enjoy all rights.