In the "Guangyun" (Guangyun), the pronunciation is noted as hu mai qie, pronounced the same as "shuo". The "Yupian" (Yupian) explains it as the sound of a door. The "Guangyun" (Guangyun) records it as the sound of a door opening. Furthermore, in the "Jiyun" (Jiyun), the pronunciation is noted as huo guo qie, pronounced the same as "zhuo". The meaning is to open.