Huarong Road is an ancient folk puzzle game in China. Because of its changeable and inexhaustible characteristics, it is called "the three superman in the intellectual game world" by foreign intelligence experts together with Rubik's cube and independent diamond. It is also synonymous with traditional educational toys in China, such as jigsaw puzzles and nine-ring puzzle, which is called "China's jigsaw puzzle". According to the annotation of Zi Tongzhi Jian, "Huarong can be reached from this road". Huarong Road was originally an ancient place name in China. According to legend, Cao Cao once defeated this place. Because Huarong Road was a swamp at that time, Cao Cao's army had to mow the grass and fill the land, and many soldiers were buried alive even worse, very tragic.