The young Prince of Nanan. Once a celebrated young general with remarkable achievements, highly esteemed and extraordinarily handsome. After the Battle of Changye, the Nan'an Palace lost three legitimate heirs, and he became a notorious playboy, frequenting taverns and brothels. Despite rumors of him being frivolous and wayward, Xu Duanyi still believes he is a good person at his core. He was engaged to Baozhu four years ago.