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As we know, smoking is harmful to our health. This ashtray will warn people about this. When people are smoking, the smoke will be produced. Then the cross on the ashtray will react with the smoke. As the concentration of smoke and the amount of injurious ingredient increasing, the cross will gradually turn from blue to gray to warn people that smoking means to rob ones life.
China Academy of Art
Shanghai, China
China Academy of Art
Shanghai, China
Du Cui
Liu Jun
Yu Lei
Li Teng