Several ways to recognize fake smile(shi bie jia xiao de ji ge tu jing )

First of all, the smile from the heart will wrinkle the corners of the eyes, but the smile can't affect the muscles of the corners of the eyes. Even if it does, it is stiff and fleeting.

Secondly, fake smile can be maintained for a very long time, because it lacks the intrinsic motivation of real emotion, so it is difficult to know when it will end. Moreover, there are often inconsistencies between eyes and mouth, facial expressions and body movements.

Thirdly, for most expressions, the sudden beginning and end indicate that people are consciously using the expression.

Finally, when you smile, the expression of the two cheeks is often asymmetric. People who are used to using the right hand pick the left corner of the mouth higher, while people who are used to using the left hand pick the right corner of the mouth higher.

Chinese PinYin : Shi Bie Jia Xiao De Ji Ge Tu Jing