In the 1990's, the focus of phonological studies has changed from rule-based analysis to constraint-based analysis. The study of Chinese phonology has also undergone such a change, as have other area studies in Generative Phonology. Why and how this change has occurred, the difference between the two kinds of analyses, and what has really happened in phonology after the change are the primary concerns of linguists and anyone interested in the study of Generative Phonology or other area studies in Generative Linguistics. To answer these questions, one must: (1) review the developing process of...