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In the process of queueing, the crowded state is often formed, thus the distance between people is very closer. That way,it is very inconvenient for the people wearing backpacks to take out something from their back.I design a bag which can help people quickly find the specific things.Backpack is composed of four bags and one rope,The rope length can be adjusted for people in different size，four bags are used to store different kind of things.Also It has two different ways of using bag!
east china university of science and technology