S. L. Wong (romanisation)
Wong Shik-Ling (also known as S. L. Wong) published a romanisation scheme accompanying a set of phonetic symbols for Cantonese based on International Phonetic Alphabet (IPA) in the book A Chinese Syllabary Pronounced according to the Dialect of Canton. == Phonology == Cantonese, like a number of other varieties of Chinese is monosyllabic.
Source: Wikipedia — S. L. Wong (romanisation) (CC BY-SA 4.0)