World smile day, is the only one festival of the expression of human behavior, world mental health organization to every year since 1948 on May 8, identified as world smile day, the day will become particularly sweet, in the smile to others, you will see the world smile to himself.

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On May 8, is the world smile day, today, are you laughing at? It is said that this is the only a festival celebrating the expression human behavior. On the corners of the mouth become warped, we against gravity brings a smile face aging, also a goodwill with a smile, live in harmony with the world. In your smile to others, also can see the world smile at you. Come along, smile!

Since 1948, the spirit of the world health organization will every year on May 8, identified as "world smile day, hope to promote human physical and mental health, by smile passed from person to person is cheerful and friendly at the same time, promote social harmony.

世界微笑日，是唯一一个庆祝人类行为表情的节日，从1948年起世界精神卫生组织将每年的5月8日确定为世界微笑日，这一天会变得特别温馨，在对别人的微笑中，你也会看到世界对自己微笑起来。

5月8日是世界微笑日，今天，你笑了吗?据说这是唯一一个庆祝人类行为表情的节日。嘴角上翘，我们用微笑对抗地心引力带来的面容衰老，也用微笑释放善意，与世界和睦相处。在你对别人的微笑里，也会看到世界对你微笑。一起来，笑一个!

从1948年起，世界精神卫生组织就将每年的5月8日确定为“世界微笑日”，希望通过微笑促进人类身心健康，同时在人与人之间传递愉悦与友善，增进社会和谐。