The geomantic compass of Bazhai school can be used without a compass, and it is better to have a geomantic compass. First, use the compass to divide the direction into eight directions, that is, eight "acquired gossip"; Oriental divination, southeast divination, south divination, southwest divination, Kun divination, west divination, northwest divination, north divination and northeast divination, together with the position where the compass is placed, the middle palace (center point) constitutes the nine palaces (eight diagrams and nine palaces) and the life form to which the Lord belongs. Any compass is marked with this gossip symbol (but pay special attention to the difference with the "innate gossip" orientation symbol). For specific methods, please refer to the primer Eight Houses Mirror.