Wu Alphabet

Wu Chinese (吴语) is a group of Sinitic languages spoken by approximately 80 million people in the Yangtze River Delta region of eastern China. The main areas include Shanghai municipality, Zhejiang province, and southern Jiangsu province.

The most internationally recognised Wu variety is Shanghainese (上海话), the dialect of Shanghai, which has become a prestige form among Wu speakers. Other notable varieties include Suzhounese, Wenzhounese, and Hangzhounese.

Wu and Mandarin are not mutually intelligible in spoken form, despite sharing the same written Chinese character system. They diverged from a common ancestor over many centuries.

The most striking difference is that Wu preserves voiced stops (b, d, g) and the voiced affricate dz that Mandarin lost. Wu also retains entering-tone syllables ending in stop consonants, giving it a clipped, staccato quality absent in Mandarin.

Wu also has more vowels, including the rounded front vowels eu and oe, and a different tonal system with five or more tones compared to Mandarin's four.

Wugniu is the principal Latin romanisation system developed to represent the phonetics of Wu Chinese. Unlike Pinyin (designed for Mandarin), Wugniu uses letter combinations suited to Wu's distinctive voiced consonants and entering-tone finals.

Wugniu represents voiced initials with b, d, g, dz and z — letters that in Mandarin Pinyin would never appear as syllable initials in the same way. The system is used primarily for linguistic documentation and online Wu language communities.

In formal writing, Wu speakers write in standard Chinese characters (Hanzi) following Mandarin written norms. There is no widely standardised separate writing system for Wu Chinese in everyday use.

In informal digital contexts, Wu speakers may represent dialect-specific words with phonetic characters, invented characters, or adapted existing characters. Academic linguists and Wu language activists use Wugniu romanisation to document pronunciation, but everyday written Wu follows Mandarin character conventions.

Shanghainese (上海话) carries prestige among Wu varieties primarily because Shanghai is China's largest city and a major global economic and cultural hub. The dialect served as a regional lingua franca for Wu speakers from different parts of Zhejiang and Jiangsu during the 20th century.

However, Shanghainese faces pressure from Standard Mandarin, which is the official language of education, media, and government throughout China. Younger Shanghai residents increasingly use Mandarin as their primary language, leading to concerns about the vitality of Shanghainese among linguists and cultural advocates.