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It's a bag with extended funtion. Pull up the cover and buckle on to set more things. It can save more trees from cutting down to make bags. Then, the tree with birds will be cut down and birds also fly away while it is extending. Both their lives extend to another way and hardly come back. Reminding the concept of saving.
National Taiwan Normal University
Taipei, Taiwan
National Taiwan Normal University
Taipei, Taiwan
Min-Fang Hsu