Sinological phonetic notation

Chinese linguists use a number of additional phonetic symbols that are not part of the standard International Phonetic Alphabet. These symbols are commonly encountered in introductory textbooks of Chinese phonetics and in introductory descriptive works of any Chinese "dialects". Many Western linguists who work in the field of Chinese linguistics also use these symbols, for instance, Loggins (2022) writes "[to] introduce the general reader to what they may encounter should they consult one of such publications, I am using the IPA-castaways [ʅ] and [ɿ]".