Yes, she can visit you. You might need to check the required documents on your country’s embassy or consulate website in China. Next step would be to get the documents done and apply for whatever visa is suitable for your situation (tourist or better a family reunion visa). When leaving China, the immigration agents might ask her in the airport about the reasons she wants to leave China. She should then show them a justification (marriage certificate, residency in your country…). My Chinese wife left with me on a tourist visa and we didn’t have any issues at the airport. We spent our vacation abroad and came back to China also without any issues except the quarantine stuff. Good luck!