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As children grow up, they have to learn how to wear buttons. However, their buttons would be crooked without their parents helps.
‘Happy Buttons’—a series of colorful buttons, each button has a corresponding ring with the same color. Due to ‘Happy Buttons’, the children can wear buttons exactly.
shaanxi university of science & technology
shaanxi university of science & tec
Chao Ren; Gao Dan; Shixiao Li; He Sui