Perhaps the history of Tangram can be traced back to the ancient book "The Book of Changes Bisuan Classic" in China before Qin Dynasty, in which there is a tangent square, which is used to prove the Pythagorean theorem. At that time, the big square was cut into four identical triangles and a small square, not a puzzle. The present jigsaw puzzle has experienced a historical evolution. It developed from Yan Ji Tu in Song Dynasty to Die Ji Tu in Ming Dynasty, and then to Qiao Qi Tu in early Qing Dynasty. It has a history of more than 2500 years.
There was a man named Huang in the Song Dynasty. He was very good at geometry. He was hospitable and invented a "banquet table" consisting of six small tables-a small table for eating. Later, someone improved it into a seven-table banquet. According to the number of people who eat, the table can be put together in different shapes, such as three people putting together a triangle, four people putting together a square and six people putting together a hexagon ... so that everyone is convenient and the atmosphere is better. Later, someone reduced the banquet to only seven boards, used it to puzzle and turned it into a toy. Because it is very clever and interesting, people call it "Tangram". In the late Ming and early Qing dynasties, people in the palace often used it to celebrate festivals and entertainment, and put all kinds of auspicious patterns and words together. The Palace Museum still keeps the puzzles of that time! (Amoy Toys Network welcomes you to buy Tangram)
Dutch writer Gao Luopei wrote in his novel that a dumb boy supplemented his gestures with jigsaw puzzles. It is said that French Napoleon often played jigsaw puzzles to kill time after he was exiled.
Tangram spread to Europe and is still very popular today. 1978 JoosfElffers, a Dutchman, wrote a book about Tangram, and collected 1600 kinds of graphics, which were translated into many languages and published. Today, almost no one in the world doesn't know puzzles and puzzles. It is called "Tangram" abroad, which means a jigsaw puzzle from China (not a picture invented in the Tang Dynasty).
/kloc-in the 0/8th century, the jigsaw puzzle spread abroad, which immediately aroused great interest. Some foreigners played all night and called it "Tangtu", which means "Puzzle from China". In Europe, The New China Children's Mystery published about 1805 contains 24 puzzles and a wooden puzzle. Subsequently, the books on Tangram were published in French in 18 10, and in German and American in18/0/8. The Italian books also introduced the history of China. In the preface of these books, it is said: This is a recreational game for men, women and children, dignitaries and ordinary people, and it will not make you lose money like other gambling tools.