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There is no evidence of this but, if it was true, then paper folding would have started in China. [Photo: Cai Lun (Ts'ai Lun); inventor of paper] That being said, there is very little examples of origami or paper folding in China.
Origami paper comes in many grades, types, and sizes. They are usually square in shape, though some are circular or rectangular. The most common type is colored on one side and white on the bottom size. This type of paper can be found in office supply stores, arts & crafts stores, and on the internet. Click here to see a list of affordable origami paper. Duo paper has one color on the top, and another color on the bottom.