Can't use it. Xiangyun, a Cantonese teacher, can't be used by primary and middle school students all over the country. Guangdong Xiangyun digital teaching material application platform is only for teachers and students in Guangdong Province. Students in big cities or remote mountainous areas, teachers and students in Guangdong Province, can get in touch with the best quality teachers in Guangdong Province through the application platform of Guangdong Xiangyun digital teaching materials. For example, during the epidemic, students can log on to the platform and learn the teaching content of standard pronunciation by themselves. Students in remote areas can also improve their English through reading, practice and teacher-student interaction according to digital textbooks.