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We often need some simple items to entertain our life .
At this moment, some jigsaws easy to play might be available.
Not only can we enjoy the fun, but also strengthen our innovative capabilities
by choosing the colors and patterns of them.
Dalian University of Technology
Da Lian, China
Jin Xin,
Dalian University of Technology
Chuyi Long,
Huazhong University of Science and Technology
