
Among the 54 Vietnamese ethnic groups some have had their own scripts for a long time and some have not preserved their ancient scripts. As a matter of fact, some ethnic groups consisting of some hundreds of individuals living in remote areas have their own languages.

Throughout the years, these languages have been enriched in terms of vocabulary, precision, and expression.

However, the Viet language is most commonly used.
In terms of script, for a long time under northern domination, han (Chinese) was widely used in trade, education and state documents. This lasted until the beginning of 20th century. During the eighth century, parallel to the use of han, the Vietnamese created the nom script, which used the pictography of han to note the sounds of the Viet language. The appearance of the nom script marked a point of maturity in the national conscious of the Viet, and led to the development of literature in .
In the 16th century, quoc ngu (a Romanized script produced by French missionaries) appeared and was substituted for both the han and nom scripts.
Worship of Ancestor Custom
A very popular belief among Vietnamese is the custom of the ancestor cult. In every household, an ancestor altar is installed in the most solemn location.

Vietnamese believe that the soul of a dead person, even if dead for many generations, still rests along with their descendants on earth. The dead and living persons still have spiritual communion; in everyday life, people must not forget that what they enjoy and how they feel is the same for their dead relatives.
On the last day of every lunar year, an announcing cult, cung tien thuong, is performed to invite the dead forefathers to return home to celebrate Tet holidays with their families. During the last days before Tet, all family members visit their ancestors’ graves; they clean and decorate the graves, in the same manner that the livings clean and decorate their houses to welcome the New Year.

On the anniversary of an ancestor’s death, descendants and relatives unite and prepare a feast to worship the dead people and to ask for health and happiness for themselves. From generation to generation, ancestor worshipping customs have been religiously preserved. There are some small variations between those customs among the many Vietnamese ethnic groups, but the common theme of fidelity and gratitude towards the ancestors remains.
The Vietnamese culture has always evolved on the basis of the wet rice civilization. Thus, the lifestyle of the Vietnamese population is closely related to its village and native lands.
In Vietnamese society, people gather together to form villages in rural areas, and guilds in urban areas. Villages and guilds have been forming since the dawn of the nation. These organizations have gradually developed for the population to be more stable and closer together. Each village and guild has its own regulations called conventions.
The purpose of these conventions is the promotion of good customs within populations. All the conventions are different but they are always in accordance with the state laws.
Approximately ten thousands such conventions are kept in the History Museum in Hanoi and in other museums throughout the country.
A very popular belief among Vietnamese is the custom of the ancestor cult. In every household, an ancestor altar is installed in the most solemn location.
Vietnamese believe that the soul of a dead person, even if dead for many generations, still rests along with their descendants on earth. The dead and living persons still have spiritual communion; in everyday life, people must not forget that what they enjoy and how they feel is the same for their dead relatives.
On the last day of every lunar year, an announcing cult, cung tien thuong, is performed to invite the dead forefathers to return home to celebrate Tet holidays with their families. During the last days before Tet, all family members visit their ancestors’ graves; they clean and decorate the graves, in the same manner that the livings clean and decorate their houses to welcome the New Year.
On the anniversary of an ancestor’s death, descendants and relatives unite and prepare a feast to worship the dead people and to ask for health and happiness for themselves. From generation to generation, ancestor worshipping customs have been religiously preserved. There are some small variations between those customs among the many Vietnamese ethnic groups, but the common theme of fidelity and gratitude towards the ancestors remains.