Prince of Yan
On 16 January 1401, the Yan forces returned to Beiping. The Battle of Dongchang was the largest defeat suffered by Zhu Di since the onset of the campaign, and he was particularly saddened by the death of Zhang Yu. During the battle, Zhu Di was almost killed on numerous occasions. However, the government forces were instructed by Jianwen Emperor to refrain from killing Zhu Di, which the Prince of Yan took advantage of.