Zi Collection, Middle Volume, Page 170, Entry 04 Pronounced yu (falling tone) "Book of Rhymes (Jiyun)" explains the pronunciation as yu liù qiè, with the same pronunciation as "yù". "Jade Lexicon (Yupian)" explains it as a covering on a carriage. "Pianhai (Pianhai)" explains it as the railings and curtains around a carriage compartment.