Chang Tsung-Lung is a pivotal figure in the realm of physical media, particularly known for his influential work in film production during the 1970s. His most notable film, *Who is to Blame?* (1973), has garnered a dedicated following among collectors for its unique blend of social commentary and cinematic artistry. This film not only showcases Chang's talent for storytelling but also encapsulates a significant era in film history, making it a must-have for enthusiasts of vintage cinema. Collectors seek out Chang’s work not only for its artistic merit but also for its limited availability in physical formats. *Who is to Blame?* has become a prized item on VHS and DVD, often fetching high prices due to its cultural significance and the nostalgia it evokes. With a keen eye for production quality and a deep understanding of audience engagement, Chang Tsung-Lung's contributions to the film industry continue to resonate, making his work a staple in any serious collector's library.