Wei Collection, Upper Volume Radical: Bamboo (zhú) Nào Kangxi strokes: 12 Page 882, Entry 15 Pronounced yào. According to the Extensive Rhymes (Guangyun) and the Collected Rhymes (Jiyun), the sound is yào. In the Approaching Elegance (Erya), specifically in the section Interpreting Palaces (Shigong), it is stated: A thin layer on a roof is called nào. The commentary notes: This refers to the compression of roof materials. Also, according to the Collected Rhymes (Jiyun), pronounced yáo. According to the Classified Compendium (Leipian), pronounced yí. The meaning is the same.