Kindred of the East: Crimson Empires
Mortal (Historical), Li Hong
He was a crown prince (not emperor, despite his formal title) of the Chinese dynasty Tang Dynasty. He was the fifth son of Emperor Gaozong and the oldest son of his second wife Empress Wu (later known as Wu Zetian), and he was made the crown prince in 656. As he grew older, he often came in conflict with his ambitious mother Empress Wu, and it is commonly believed by traditional historians that she poisoned him to death in 675. His father Emperor Gaozong, then still reigning, posthumously honored him with an imperial title.