| Siyi | |||||||||||||||||
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| Seiyap, Sze Yup | |||||||||||||||||
| Native to | Guangdong, China; Sze Yup Chinese communities in Hong Kong, Southeast Asia and the Americas. | ||||||||||||||||
| Region | Sze Yup | ||||||||||||||||
Native speakers | 3.9 million (2010)[citation needed] | ||||||||||||||||
| Dialects | |||||||||||||||||
| Language codes | |||||||||||||||||
| ISO 639-3 | None (mis) | ||||||||||||||||
| ISO 639-6 | siiy | ||||||||||||||||
| Glottolog | siyi1236 | ||||||||||||||||
| Linguasphere | 77-AAA-mb | ||||||||||||||||
 Siyi (lower right), among other Yue and Pinghua groups in Guangxi and Guangdong | |||||||||||||||||
| Chinese name | |||||||||||||||||
| Chinese | 四邑方言 | ||||||||||||||||
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| Alternative Chinese name | |||||||||||||||||
| Chinese | 四邑話 | ||||||||||||||||
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Siyi (Seiyap or Sze Yup in Cantonese; Chinese: 四邑方言; pinyin: Sìyì fāngyán; Jyutping: sei3 jap1 fong1 jin4 meaning "Four Hamlets") is a coastal branch of Yue Chinese spoken mainly in Guangdong province, but is also used in overseas Chinese communities. Within the province, it is mainly spoken in the prefecture-level city of Jiangmen, but pockets exist outside Jiangmen, including the Doumen and Jinwan districts in Zhuhai, Guzhen in Zhongshan and Jun'an in Foshan. Taishanese, which was one of the most important Chinese dialects in Chinese American communities, is considered a representative dialect.