Formerly a Marquis and the only son of Prime Minister Gu, nephew of the Empress. A prodigy mastering both literature and military strategy. He devoted over ten years to supporting Han Zhen, even persuading his father to back Han Zhen's bid for the throne. Betrayed and framed for treason by Han Zhen, he was tortured daily in the dungeon and ultimately strangled to death. His soul transmigrated into the body of Tang Jiwei after death.
