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People in the world have no reason not to be happy. The blue sky, white clouds, green mountains, and fragrant flowers are a beautiful world. Being alive in this world is a reason for happiness. According to statistics, crying requires the movement of n muscles, as well as the activation of the lacrimal sac, while smiling only requires the movement of a few muscles. Therefore, it is clear that smiling is better than crying.
Shiny, Happy People {Papers}
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