It may be man-made, it may be a quality problem, or it may be that some lawless people deliberately cracked the cards for the convenience of drawing cards, so once the cracked cards appear, they must go to the mahjong hall to buy a new mahjong. The outer circle of Jiugong Bagua brand in Liao Dynasty is an angry four-handed beast with sharp teeth, which is called Zibazha in Tibetan, or Xing Jun in Tai Sui. There are three circles in the middle of the sign, and the outermost circle is the zodiac. The middle circle is the acquired gossip pattern. The eight diagrams of the day after tomorrow rotate clockwise from top to bottom, which are: Li, Kun, Right, Gan, Kan, Kun, Truth and Xun, representing fire, earth, ze, heaven, water, mountain, thunder and wind respectively. The inner ring is a nine-square pattern on the turtle's back, which conforms to what China people say: "Wear nine shoes, one shoulder, two shoulders, six feet, three left and seven right".