Sima Daozi
After the battle, however, Xie's power began to wane. Part of it was that his son-in-law Wang Guobao, a son of Wang Tanzhi, whose behavior Xie disapproved of, began to attack him before both Emperor Xiaowu and his brother Sima Daozi the Prince of Kuaiji, leading to the emperor no longer trusting Xie An as much, although he remained prime minister.