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Soft copy refers to the manuscript before the invention of printing. Before the invention of printing, the spread of books could only be copied.

Jigsaw puzzles have been in the history of human society for about 235 years. Jigsaw puzzles can exercise children's logic and cognitive toys, and can also improve children's hands, brains, and heart abilities. For children, most children like puzzles Most of the pictures are based on cartoon characters, such as the princess, Winnie the Pooh, Mickey and so on.

First classify the puzzles according to color, right angles, and straight edges;

Inspire people to reason and think and improve hand-eye coordination.