Traditional steamers are cylindrical baskets made of dried, woven bamboo; when in use, they are placed above a pot of boiling water. Dried bamboo appears white or pale grey. As such, a steamer's exterior is here compared to a pale mountain. On the interior of the basket, especially on the interior side of the lid, the bamboo is woven together around an arrangement of spokes radiating from the center. This riddle compares this woven basket, which creates a circular, concave form, to a bird's ribcage.