Qian Binsi (zi of Qian Mu, 1895-1990) wrote his "Collected Commentaries on the Zhuangzi", an important work on pre-Qin philosophers, during the zenith of his scholarly life. From a broad perspective of Chinese intellectual history, based on the diachronic development of "Zhuangzi" scholarship, Qian approaches the "Zhuangzi" in light of Confucianism and observes the reciprocal relationship between Daoism and Confucianism in his substantial and subtle commentaries. He demonstrates superb insights in some of his arguments and stands out from the vogue of his time. These accomplishments were ascribed to the integrated use of his research methods of "argumentation", "textual research", and "rhetoric". In the interaction between Chinese and Western scholarly worlds during the first half of the twentieth century, when traditional and new knowledge saw a transition, the Collected Commentaries on the Zhuangzi reveals a consciousness of integrating traditional and new learning as well as a comprehensive mastery of both Chinese and Western scholarship. Most importantly, living between "dark heaven and yellow earth", a period of political turmoil and a turning point of his personal fate, Qian entrusts in his scholarship his deep cultural consciousness and great sadness for history.