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Generally, the soap is solid. When the soap become smaller, it is difficult to hold and easy to break into two pieces. Also, it is easy to dissolve into water, after being used. To get away from water, we try to hang it on the wall when being free from use. For the pieces problem, we want to make the soap hollow .To achieve the goal, we try to not only put something in it, but also make full use of the last piece of the soap. Transforming the piece into bubble by dissolving the piece into water. Child may focus more attention to housework, just for collection the handle.
Zhe Jiang University
Ning Bo, China
Xuan Chen;Peng Liu;Lin Lin