Zi Collection, Upper Volume, Page 15, Entry 02 "Book of Rhymes (Tang Yun)" and "Collected Rhymes (Jiyun)" state that this character is pronounced "nai hou qie," sounding similar to "gou." "Shuowen Jiezi" explains it as water, and there is also a saying that it is the name of a river. Additionally, "Collected Rhymes (Jiyun)" records another pronunciation as "ru zhu qie," sounding similar to "ru," with a meaning identical to "na." "Shuowen Jiezi" explains it as the rich flavor of wine.