Mandarin phonetic symbols (MPS), a phonetic alphabet for Chinese used especially in Taiwan, also known colloquially as Bopomofo.

a system or method for representing the spoken sounds of a language through transcription

The official phonetic system (Mandarin Phonetic Symbols 1) used for transcribing Mandarin Chinese in Taiwan, commonly abbreviated as [[注音一式|注音一式|zhu4 yin1 yi1 shi4]].

Wade-Giles transliteration scheme for Chinese

the primary set of Mandarin Phonetic Symbols used in Taiwan, commonly known as Bopomofo