Jianwen Emperor Zhu Yunwen

In the 31st year of Hongwu's reign, Zhu Yuanzhang died, and the emperor's grandson Zhu Yunwen succeeded to the throne. He implemented lenient policies, but the reduction of vassal status offended King Zhu Di of Yan. In the first year of Jianwen, Zhu Di used the Qing monarch to flank Jingnan. Four years later, the Yan army broke through Nanjing. King Gu and Li Jinglong opened the Jinchuan gate and surrendered, and the palace was on fire. Zhu Yunwen opened his grandfather's casket...