Tangram of traditional game projects

Folk traditional intellectual toys, also known as "seven clever pictures" and "wisdom board", evolved from Yan Ji in Tang Dynasty. It was originally an indoor game played by literati. Later, it spread to the people and gradually evolved into a jigsaw puzzle, that is, a square thin plate. Three pieces of plywood or cardboard were cut into seven pieces and slightly cut. How to play: take apart seven boards and spell them into seven numbers. Such as character dynamics, animal and plant images, buildings, pavilions, ships, chariots and horses, flowers, birds, insects and fish, stars in space and various geometric figures. You can play alone, or you can play various games by several people. Because of the scientific design, ingenious creativity changes endlessly, which can improve people's imagination and judgment and inspire children's wisdom.