The 1906 performance of Dumas fils' La Dame aux Camélias by the Spring-willow Society in Tokyo has usually been considered as the starting point of modern Chinese drama (or spoken drama). However, the serious dramatic works were written no earlier than the May Fourth Movement of 1919. I have described those large quantity of modern plays produced from the third decade up to the forties of last century with the term of "pseudo-realistic pieces" because of their imitation of western realism in appearance without the real realistic esthetics. Taiwan modern drama after the Restoration continued this pseudo-realistic tradition in addition to its strong political involvements. It was the publication of Yao Yi-wei's Sun Feihu, the Snatcher of Wedding in 1965, under the influence of the epic theatre of Bertolt Brecht, which turned the dramatic mood of last century into a new era. In this paper, the author attempts to demonstrate the historical meanings of Yao Yi-wei's dramatic works in the development of modern Chinese drama in Taiwan.