On April 23, the eighth year of Xiaocheng's reign in the Dayuan Dynasty, the emperor suddenly fell ill in Weiyang Palace. He was twenty-nine years old and was given the temple name "Emperor Jing Zongren". Queen Nangong was in great mourning and volunteered to be buried for the emperor.
The emperor had a chronic illness and was frail and sickly since he was a child. During his reign, he only had one daughter, Yin tide, the daughter of the empress. Therefore, he left behind his younger brother Shu Xuanyou, Prince of Jingyang, to inherit the throne.
On September 12, the eighth year of Xiaocheng, King Jingyang ascended the throne as emperor, changed his reign title to "Yongzhen", changed the title of the late emperor's widow Yinxi to "Princess Yongle" of the Dayuan Dynasty, and granted amnesty to the world.
——"Records of Dayuan"