Siyi Yue has a representative dialect that is related to what larger language?
Siyi Yue Siyi (Seiyap or Sze Yup in Cantonese; ) 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 of 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.
Sinophone Chinese-speaking world or Sinophone or sinophone is a neologism that fundamentally means "Chinese-speaking", typically referring to a person who speaks at least one variety of Chinese. Academic writers use Sinophone "Chinese-speaking regions" in two ambiguous meanings: either specifically "Chinese-speaking areas where it is a minority language, excluding China and Taiwan" or generally "Chinese-speaking areas, including where it is an official language". Many authors use the collocation Sinophone world to mean the overseas Chinese regions of diaspora outside of Greater China, and some for the entire Chinese-speaking world. Mandarin Chinese is the most commonly spoken language today, with over one billion people, approximately 20% of the world population, speaking it.