Vietnam Communication
The official language of Vietnam is Vietnamese, which has three mutually intelligible dialects: Northern, Central and Southern. The dialects often vary in tone and pronunciation. Vietnamese vowels have six distinctive tones, five of which are indicated by a diacritic placed over or under the vowel to show different ways of pronunciation, and the unaccented vowel remains unchanged in the voice.

The official language of Vietnam is Vietnamese, which has three mutually intelligible dialects: Northern, Central and Southern. The dialects often vary in tone and pronunciation. Vietnamese vowels have six distinctive tones, five of which are indicated by a diacritic placed over or under the vowel to show different ways of pronunciation, and the unaccented vowel remains unchanged in the voice.