Dieu language

The Dieu language (Dieu: 㗂蘇海; Şiéng Ḍi̗eu) is language within the Vietic branch of Austroasiatic languages, originating from. It is the official language in Sohainesia, and a common language in Vietnam. It is written using Chinese characters, even though the Latin script has gained popularity. Dieu is viewed as a vital and inseparable part of the cultural identity for its native speakers in Vietnam, Daidieu as well as in overseas communities.

Although Daidieu has a nearly identical vocabulary to Vietanmese, is mutually unintelligible with other forms of Vietnamese, because of its different phonology. It was developed in the 15th century by Vietnamese scholars and governors of Daidieu, and maintained its way during French rule.

History
Before French colonization, Daidieu was considered as a dialect of Vietnamese due to mutual intelligibility, but was later designated as its own language due to Vietnam adopting chữ Quốc ngữ as the official script.

When France invaded Vietnam in the late 19th century, French gradually replaced Chinese as the official language in education and government. The colonial administrators discouraged the use of Chinese characters in favor of chữ Quốc ngữ, but the script never gained popularity in Daidieu, due to considerable opposition to the script. This caused the Daidieu language to separate from Vietnamese.

Phonology
"Main article: Sohainesian phonology"

Vocabulary
The vocabulary of Dieu has a lot of loanwords from Vietnamese, due to its mutual intelligibility. Here are some examples of differences:

Romanization
Daidieu bin'am (Sohainesian: Bín âm) 拼音 is the official romanization system of Dieu.