The Kura Sau -also referred to as the Gou Zhang- are those Hsien that surrendered themselves to the Yama Kings and are regarded as a part of the Mu Courts. As a result, they are able to travel to Yomi Wan without suffering the curse of the August Personage In Jade. In addition, they have their own branch of Wu Tan known as Hac Tao, a vile art that allows them to carry the tainted chi of the Thousand Hells into the world.