Gwoyeu Romatzyh
Mandarin Phonetic Symbols II (), abbreviated MPS II, is a romanization system formerly used in the Republic of China (Taiwan). It was created to replace the complex tonal-spelling Gwoyeu Romatzyh, and to co-exist with the popular Wade–Giles (romanization) and Zhuyin (non-romanization). It is sometimes referred to as Gwoyeu Romatzyh 2 or GR2.