And people with unhealthy psychology will have disunity and disharmony in body and mind. For example, when a person with vision sees a female ghost, he will be scared to shout or run away by the female ghost in the illusion, but in reality, others can't see the female ghost that this person sees (or there is no female ghost in reality), so others can't understand this person's behavior. This can also be called the consistency or coordination of the internal and external world.
For another example, children who are physically and mentally healthy will be happy if they have company and delicious food; When you lose a loved one or feel lonely, you will be sad or bored. This is the unity and harmony of body and mind. However, autistic children are more addicted to the personal world and ignore other people or things outside.