books.google.com - Cantonese is the only dialect of Chinese which has developed a widely known and used written form. It has played a role in publishing in the Guangdong region since the late Ming dynasty when various types of verses using Cantonese were published as mu yu shu (‘wooden fish books’). In the early twentieth...https://books.google.com/books/about/Cantonese_as_Written_Language.html?id=pFnP_FXf-lAC&utm_source=gb-gplus-shareCantonese as Written Language