Why do people feel depressed when the weather is bad?

When the sky is clear in Wan Li, you will feel that the sky is high and bright, and bright colors can make people feel comfortable. This is a recognized phenomenon in psychotherapy, while the cloudless sky in Wan Li will make you feel that the space is vast. On cloudy days, dark colors will make people feel uncomfortable and depressed, while dark clouds will make you feel that the sky is depressed, and the shrinking space will also make people closed and uncomfortable.