The board of Go consists of vertical and horizontal 19 straight lines. The place where the vertical line and the horizontal line intersect is called the intersection point, and the chess pieces are placed at the farther intersection point. The chessboard * * has 36 1( 19× 19) intersections. In order to identify the position of chess pieces, nine points () are drawn on the chessboard, which are called "stars", and the star in the middle of the chessboard is also called "Tianyuan". The star in the upper left corner is represented by "4.4", the star in the upper left corner is represented by "16.4" and "Tianyuan" is represented by "1.00. 10". The chessboard is divided into nine parts, including upper left corner, lower left corner, upper right corner, lower right corner, upper side, lower side, left side, right side and middle abdomen.
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As early as 595 AD, the ancients used porcelain to burn Weiqi disks. For thousands of years, people have made chess pieces with various materials such as glass, porcelain and jade, and the chessboard has a pyramid-shaped world view.
There are nine stars on the chess board, and the one in the middle is called Tianyuan. Yuan is the first meaning, Tianyuan is the highest point in the sky. With Tianyuan as the center, you can find many concentric squares (at present, you can find 9 chessboards with vertical and horizontal 19 paths).