According to the Tang Rhyme (Tangyun), pronounced gai (level tone). According to the Collection of Rhymes (Jiyun), pronounced gai (level tone). The pronunciation is the same as the word for that. It means to touch. Also, according to the Tang Rhyme (Tangyun), pronounced hai (level tone). According to the Collection of Rhymes (Jiyun), pronounced hai (level tone). The pronunciation is the same as the word for child. The meaning is the same.