What is the character of a person who sleeps with his eyes open?

If you sleep with your eyes open, your personality is usually irritable. In the Water Margin, Zhang Fei sleeps with his eyes open, so if he opens his eyes, he can give people a very dignified feeling, which is also a very scary feeling. Then a person who sleeps with his eyes open may be white, so he may also be a villain, or he may have certain eye diseases. Then it is normal for him to sleep with his eyes open, which may not have much to do with his personality, so don't associate everything with his personality. It may just be a condition for a person to sleep, but also depends on his true personality. You can't judge a person's personality simply from his sleep state.