Haiphong Sign Language is the

deaf-community sign language A deaf-community or urban sign language is a sign language that emerges when deaf people who do not have a common language come together and form a community. This may be a formal situation, such as the establishment of a school for deaf students, ...

of the city of

Haiphong Haiphong ( vi, Hải Phòng, ), or Hải Phòng, is a major industrial city and the third-largest in Vietnam. Hai Phong is also the center of technology, economy, culture, medicine, education, science and trade in the Red River delta. Haiphong wa ...

in Vietnam. It is about 50% cognate with the other sign languages of Vietnam, and has been less influenced than them by the

French Sign Language French Sign Language (french: langue des signes française, LSF) is the sign language of the deaf in France and French-speaking parts of Switzerland. According to ''Ethnologue'', it has 100,000 native signers. French Sign Language is relate ...

once taught in Vietnamese schools for the deaf. It shares cognates with the languages of the

Old Chiangmai–Bangkok Sign Language family The Old Chiangmai–Bangkok Sign Language family is a language family of two related sign languages: Old Chiangmai Sign Language and Old Bangkok Sign Language. Woodward (2003) found that they were 65% cognate, indicating that the two languages ...

of Thailand; the deaf-community sign langes of Vietnam, Thailand and Laos may be genealogically related, or there may be a history of population movement that has cause them to have words in common.

References

See also