When we tell direction by four word east west north and south. But at Joseon Dynasty they have a five direction.East is guard by a Blue dragon,West is guard by a White tiger,South is guard by a Phoenix,North is guard by hyunmoo the black turtle and snake.And center is guard by a Yellow dragon. And these animal's color's have meaning.Blue mean tree,Red mean fire,White mean iron, Black mean water,Yellow mean earth.Witch is related to week .Tuesday is call 화 and chinese character it mean fire,수 is water,목 is tree,금 is iron,토 is earth and that is related to five direction. Thanks you for listening.