Glazed tiles of this type are known to have been used to decorate palace garden walls. For a related but earlier tiled wall decorated with nine coiled dragons located in Dongda Street, Datong City, Shanxi province, dated Hongwu, see Zhongguo Meishu Quanji, The Crafts, vol. III, Ceramics, no. 63. For a later, similarly decorated wall in the Forbidden City, see Yuan Chongnian, Beijing, The Treasures of an Ancient Capital, p. 128