What kind of smile is the corners of the mouth rising?

Laughter is not judged from the corners of the mouth ~ ~ It is judged from a person's heart ~ ~ A person's eyes ~ Some people don't like to be exposed, so you can't tell whether he is laughing or crying at ordinary times ~ But you can tell whether he is laughing or sad by looking at his eyes ~ Maybe he is smiling at a slightly 2 micron corner of his mouth ~ ~