Yu Pian (Jade Chapters) records the pronunciation as huo (level tone), Guang Yun (Expanded Rhymes) records the pronunciation as xu (level tone), and Ji Yun (Collected Rhymes) and Lei Pian (Categorized Chapters) record the pronunciation as hei (level tone). The pronunciation is the same as the character for scorched. Yu Pian (Jade Chapters) explains that the combination of these characters represents the appearance of an angry shout. Additionally, Guang Yun (Expanded Rhymes) defines it as the sound of anger.