All cardinal squares are arranged. One of the ancient methods of measuring numbers. China's classical literature records the legend of Luo Shu: In the 23rd century BC, when Dayu was harnessing water, a huge turtle appeared in Luoshui, a tributary of the Yellow River. There are nine mottled patterns on the tortoise shell, which represent these nine numbers respectively. The sum of the three lines, three columns and two diagonal numbers is 15, which is called Luoshu by the world. In the numerology heritage of Han Dynasty in China, it is called Jiugong Calculation, also known as Nine palace map. Yang Hui, a mathematician in Song Dynasty, named the graphic life similar to Nine palace map as a vertical and horizontal diagram, which listed magic squares of order 3, 4, 5, 6, 7, 8, 9, 10. Among them, the construction method of the third-order Rubik's Cube: "Nine-child oblique arrangement, easy up and down, many left and right, four-dimensional prominent, wearing nine shoes, three left and seven right, two four shoulders, six and eight feet", which is more than 300 years earlier than the method proposed by French mathematician Claude Gaspar Basie.

China's classical literature records the legend of Luo Shu: In the 23rd century BC, when Dayu was harnessing water, a huge turtle appeared in Luoshui, a tributary of the Yellow River. There are nine mottled patterns on the tortoise shell, which represent these nine numbers respectively. The sum of the three lines, three columns and two diagonal numbers is 15, which is called Luoshu by the world.

In the numerology heritage of Han Dynasty in China, it is called Jiugong Calculation, also known as Nine palace map. Yang Hui, a mathematician in the Song Dynasty, named a figure similar to Nine palace map as a vertical and horizontal diagram in his book "An Algorithm for Discovering Odds from the Ancient", and listed magic squares of order 3, 4, 5, 6, 7, 8, 9, 10. Among them, the construction method of the third-order Rubik's Cube: "Nine-child oblique arrangement, easy up and down, many left and right, four-dimensional prominent, wearing nine shoes, three left and seven right, two four shoulders, six and eight feet", which is more than 300 years earlier than the method proposed by French mathematician Claude Gaspar Basie.