I was sent to a mental hospital by the police and said it would take six months. Can I take it out earlier?

You can't. According to Article 25 of the Mental Health Law of People's Republic of China (PRC): "Medical institutions that implement compulsory isolation treatment measures shall promptly inform the close relatives of patients with mental disorders who are isolated for treatment; Patients and their close relatives have the right to know the patient's condition, treatment plan and medication. " People sent to mental hospitals by police stations need to go through hospitals for relevant medical diagnosis and treatment. Family members who want to be discharged from the hospital need to apply according to the relevant provisions of the Mental Health Law. Therefore, they were sent to a mental hospital by the police and said that it would take six months and they could not be taken back in advance.