The eyes can speak as much as the mouth does. Just like the phrase "the eyes of a dead fish," when the eyes are glazed and look lifeless, a person appears to be spiritless, and when they are sparkling, a person seems to be full of energy. The eyes are a very interesting part of the face.

However, since it's not good to stare too much at a person's eyes, you can quickly look and understand a person's character from the size of their eyes.