I don't know what a very old time-travel drama is. However, I can tell you some common types of time-travel dramas and related information. Time travel dramas usually told the story of the protagonist in ancient times or the future through time travel. The common plots of such dramas included the protagonist traveling to ancient times to change his fate through wisdom and courage, and the protagonist traveling to the future to explore the mysteries of human technology development. The common types of time-travel dramas included: 1. Romance time-travel drama: It mainly tells the love story between the protagonist and an ancient woman, usually adding some sci-fi elements. 2. Wuxia time-travel drama: It mainly tells the story of the protagonist using modern knowledge and skills to defeat evil forces and protect ancient civilizations. 3. Historical time-travel drama: It mainly tells the story of the protagonist traveling to ancient times to change the course of history and save modern people. 4. Sci-fi time-travel drama: It mainly tells the story of the protagonist traveling to the future to explore the mysteries of science and technology and change the fate of mankind. These were just the common types of time-travel dramas. In fact, there were many other types of time-travel dramas that depended on the creative team and the audience's preferences.