The subgroups of the Han Chinese people are defined based on linguistic, cultural, ethnic, genetic and regional features. The terminology used in Mandarin to describe the groups is: "minxi" (, pronounced ), used in Mainland China or "zuqun" (, pronounced ), used in Taiwan. No Han subgroup is recognized as one of People's Republic of China's 56 official ethnic groups. Han subgroups Mandarin-speaking groups Total Native Han Speakers: 885,000,000 Mandarin, also known as the Northern dialects, is the largest of the Chinese languages. Even in regions where non-Mandarin speakers historically dominated, Mandarin is being brought in as a lingua franca. The Mandarin-speaking groups are the largest group in mainland China, but in the diaspora the Min, Hakka and Cantonese dialects are more numerous. The Dungan people of Central Asia are native Central Plains Mandarin-speaking Hui peoples. Other notable Mandarin-speaking peoples include the Sichuanese people and Jianghuai people. Jianghuai people The Jianghuai people distribute in the Jianghuai region between the Yangtze river (Jiang, 江) and the Huai river (淮) in central Anhui and central Jiangsu. The Lower Yangtze Mandarin or the Jianghuai Mandarin is distinctive from other Mandarin dialects. The main dialects of the language is the Nanjing dialect. Sichuanese people The Sichuanese people are centered around Chongqing and Sichuan. The Southwestern Mandarin are also the lingua Franca in Guangxi and Hubei. Wu-speaking groups Total Native Han Speakers: 77,175,000 Wu-speaking peoples, in particular, are concentrated in the Yangtze River basin (southern Jiangsu, the whole Shanghai, most of Zhejiang and parts of southern Anhui), northern Fujian, and northeastern Jiangxi. Scattered remnants of Wu-speaking Chinese are found in other parts of China, such as in Guizhou, Sichuan, Chongqing and Xinjiang, as a result after 1964. Most of them outside of Jiangnan region usually speak variants of Taihu Wu dialects. Wu Chinese is spoken chiefly in the Wu region. Jiangnanese people consist of both Shanghainese people and Ningbo people, as well as other ethnic Han in Jiangnan. They mostly speak variants of Taihu Wu Chinese. Other languages spoken are Jianghuai Mandarin and Xuanzhou Wu Chinese. The Shanghainese people are centered around Shanghai and speak the Shanghainese dialect of Wu. Ningbo people are another Wu-speaking Chinese group and speak the Ningbo dialect. Wenzhou people are a Wu-speaking Chinese group who speak Wenzhounese. Though a significant minority are also speakers of a dialect of Min Nan known as Zhenan Min. If Huizhou Chinese was fully considered