Cheng Xiaonan has made a significant mark in the world of film with a diverse range of performances, but it’s his standout role in "Poison Worm" (2019) that has captured the attention of collectors and cinephiles alike. This gripping psychological thriller showcases Cheng’s talent for embodying complex characters, making it a must-have for any serious physical media collection. The film's unique blend of suspense and drama, combined with its striking visuals, has led to various limited edition releases that collectors eagerly seek out. Cheng's work is characterized by its emotional depth and versatility, appealing to both mainstream audiences and niche collectors who appreciate independent cinema. As home video formats evolve, "Poison Worm" has been released in multiple editions, including Blu-ray and 4K, often featuring exclusive behind-the-scenes content that enhances its allure. For collectors, owning a piece of Cheng Xiaonan's filmography not only represents a commitment to quality cinema but also serves as a testament to the enduring appeal of physical media in an increasingly digital age.