According to Expanded Rhymes (Guangyun), Collected Rhymes (Jiyun), and Rhyme Meeting (Yunhui), the pronunciation is wei. It describes the appearance of a mountain that is high, steep, and winding. In the Rhapsody of the Imperial Park (Shanglin Fu) by Sima Xiangru, it is written: Wairei. Also, according to Expanded Rhymes (Guangyun) and Collected Rhymes (Jiyun), the pronunciation is wei. Wairei is the name of a mountain. It is also written as a variant form (wei).