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When the kid stands in front of the wall, due to induction, the wall will show a tree.Together with kids growing height,the tree is also growing slowly, until it reaches to the same height as the kid. So it can record the growth of kid, and the kid will see his or her height case, enjoying the fun of growing up.
Hunan University
Hunan University
Changsha, China
Hunan University
Hunan University
Changsha, China
Yangxue
HuSonglin
Linxie
ZhangXiaoqiong