Illegal. Article 1032 of the Civil Code of People's Republic of China (PRC) stipulates that natural persons have the right to privacy, and no organization or individual may infringe upon others' right to privacy by spying, harassing, exposing or making public. Therefore, the spouse of an orthopedic surgeon installing monitoring equipment in clinic without permission will infringe on the patient's right to privacy, including sensitive information such as his physical condition, illness and diagnosis and treatment process.