As an opulent language of Vietnamese people, Vietnamese language expresses the national identity and diversification in language of the country. However, people in each part of the country speak with different dialects with a bit of different vocabulary.
Based on the relations between languages, the history of Vietnamese language is divided into six periods: Proto-Vietic language, pre-ancient Vietnamese, ancient Vietnamese, medieval Vietnamese, pre-modern Vietnamese, and modern Vietnamese.
Vietnamese language is the national language of Vietnam with over 80 percent of population speaking the language as mother tongue. Besides, Vietnamese language is widely spoken in overseas, especially in the United States and other European countries.
Vietnamese language has a distinct language variation. The language can be different from one region to another region across the country. The difference is also called regional dialects of Vietnamese language including North, Central and South.
Although Vietnamese language is originated from Austroasiatic language family, its linguistic characteristics are different from those of other languages in the region like Chinese, the neighbor of Vietnam.
Vietnamese grammar is not easy to be absorbed, though writing system based on Latin alphabet. It is an independent language in South East Asia. Grammatical relations are expressed without the morphology; it is reflexed via vocabularies and orders.
If we understand clearly Han Nom script, we will be more aware of the beauty and quintessence of Vietnamese language. Consequently, Han Nom is a tool for studying history and cultural values. Moreover, it will help purify the Vietnamese language.