The curtain separating the kagami no ma and stage. The curtain is often made of a five-colour silk brocade sewn vertically and joined with linen on the reverse side. The five colours of the brocade have been attributed to the five principal elements, wood, fire, earth, metal and water that make up the universe in the theory of Yin and Yang and the five elements, but the curtains differ by stage. On the upper part of the curtain there is a ring, known in Japanese as a chi, or teat, for its resemblance to such, through which a thick rope connected to the curtain by a metal fitting is passed. Bamboo poles are attached to the bottom of the curtain in two places, allowing the curtain to be raised by two people.