There were four volumes in the Great Tang Di Gong's case: 1 " The First Volume of the Great Tang's Di Gong Case: First Encounter " 2." The Case of Duke Di of the Great Tang, Volume 2: Golden Ambassador " 3." The Case of Duke Di of the Great Tang, Volume 3: Impartial Justice " 4. The Case of Duke Di of the Great Tang, Volume 4: The Truth Revealed