VA Shortcut for the People of Guangdong Dialect to Learn the Naught - sound in Putonghua

Because of no naught - sound in Guangdong dialect, there exist two difficulties for the people of Guangdong dialect to learn the naught - sound, i. e. not sounding it correctly and which characters should be sounded as it. The present paper thinks that knowing the sound precisely, mastering its basic vocal principles and remembering some rules and ways of it is the key to learn it well.