This article focuses on Wang Zhaolin (1887-1963), a native Taiwanese monk living in the Japanese colonial period. It explores how Mr. Wang, with a strong identity of Japanese imperial Buddhism, gradually adjusted himself with the new Chinese regime after World War II came to an end. The issues surrounding ”identity” and ”identity-shift” are perennially the most difficult ones to face for every human being. This article seeks to examine how Wang Zhaolin managed to get through the two different ideologies before and after World War II.