More than 100 years ago, scientists found that although real and fake smiles can affect the muscles around the corners of the mouth, only real smiles can cause wrinkles around the corners of the eyes. This real, infectious and heartfelt smile is Du Xing smile.
Dixiang smile is characterized by a full smile, exposed teeth, raised cheeks and wrinkles around the eyes. Just like them in the picture.
Smile is a language in the world. Sincere smile from the heart is not only an expression and expression, but more importantly, it reflects a person's optimistic, simple and kind heart.
1860, a French doctor, Di Xiang, made the first attempt to conduct scientific research on human smiling expressions. He used electric current to stimulate the facial muscles of the subjects to activate certain emotions and emotions, and photographed the facial muscle activities corresponding to each emotion and emotion. He found that the real smile signal is not only that the smiling muscles are stimulated, which makes our corners of the mouth pulled up;
It will also activate the small muscles around the eyes, leading to wrinkles around the eyes, commonly known as crow's feet, which is a pleasant pure smile with great appeal and affinity; Professional camouflage smiles are often only those with protruding cheeks and corners of the mouth, but not those with protruding eyes. Therefore, China has a saying that this kind of smile is "skin smiles but meat doesn't smile", which should be expressed as "skin smiles but meat doesn't smile" in scientific psychology.