According to "Tang Yun" (Tang Yun) and "Ji Yun" (Ji Yun), the pronunciation is Wang Ju qie, same as "yu". "Shuowen Jiezi" (Shuowen Jiezi) explains it as the appearance of rain. It is a regional dialect. The character is composed of "yu" and "yu", where "yu" indicates the pronunciation. Also, "Ji Yun" (Ji Yun) notes the pronunciation as Huo Wu qie, same as "hu". In northern regions, rain is called "xie". This is according to Lü Jing. Also, "Ji Yun" (Ji Yun) notes the pronunciation as Xu Ju qie, same as "xu". The meaning is the same. Also, the pronunciation is Wang Yu qie, same as "yu". "Boyao" (Boyao) explains it as stretching out. Another explanation is the appearance of rain.