This paper aims at making the close investigation into the literary achievements of Laurence Yep`s adapted play, Dragonwings (1992). The criticism on it`s theme can be divided into three: prejudices and discriminations (Hua); the past legacy of Chinese Americans (Mehan); the dreams of Chinese immigrants (Swortzell). However, Hua lacks in the historical approach toward the early twentieth century`s Chinese immigrants in America. Mehan is greatly dependent on the author`s opinion on the importance of the past legacy to Chinese Americans. Swortzell lacks in concrete discussion on Windrider and Moon Shadow`s dreams. The first achievement in the play is that it gives readers or audiences the sense of reality of the early twentieth century`s Chinese American immigrants in America because of the author`s intermittent elucidation of specific dates and places. So we can see vividly the bachelor society of the Chinatown in San Francisco and the White Mob`s violence against Chinese immigrants in the Exclusion Era through the play. The second achievement is that the play reveals the three patterns of acculturation based on the quadri-modal acculturation models-integration, assimilation, separation, and marginalization-by Berry and colleagues. Windrider adopts the integration strategy and shows openness, favor, positiveness toward Mr. Alger and Miss Whitlaw. His son, Moon Shadow, adopts the same strategy after overcoming the superstitious fears on the Westerners. Uncle Bright Star changes his strategy from separation to integration making friends with Miss Whitlaw during the San Francisco Earthquake and Fire. His son, Black Dog, is subject to marginalization because he fails to adapt himself to American society and lacks pride in his cultural identity. Yep dramatizes that integration is the most desirable acculturation type and marginalization is the most undesirable one. Therefore, Yep`s Dragonwings can be estimated as a historical fantasy play for children arousing readers` or audiences` sympathy because four Chinese immigrants` arduous lives in America in the early twentieth century are presented interestingly and instructively.