Liu Wai-Hung, affectionately known as "Ar Chan," is a notable figure in Hong Kong cinema, particularly remembered for his captivating performances in the late 20th century. He began his career with TVB in 1977, quickly rising to prominence with his dynamic acting skills. One of his standout roles came in the 2000 film *Undercover Blues*, a light-hearted action-comedy that showcases his versatility and charm. This film has become a sought-after title among collectors, not only for its nostalgic value but also for its representation of the unique blend of humor and action that characterizes Hong Kong cinema. Collectors are particularly drawn to Liu's work due to his iconic status in the industry and the limited availability of his films on physical media. As vintage Hong Kong films experience a resurgence in popularity, titles featuring Liu, like *Undercover Blues*, have become prized possessions for enthusiasts looking to capture a slice of cinematic history. His contributions to the genre continue to resonate, making his films essential additions to any serious collection.