There should be an empty door behind the office seat. The so-called empty door is the back door or window or aisle. It's easy to feel insecure, and it's most difficult to concentrate on office. The back of the human brain is the brain wave radiation area, which is also one of the most sensitive parts of the human body's induction gas field.
Solution: Use a chair with a backrest and put green plants on the windowsill. .