Li's wife is Zheng Guanyin, the daughter of a noble in the Northern Dynasties. Her family has been an official for generations and is very prominent. She was born in the Zheng family in Xingyang, where there are five top gentry. Zheng Dangshi is one of them, with high social prestige. During the Sui and Tang Dynasties, the children of aristocrats regarded marrying a woman with five surnames as the best choice for marriage. Even at that time, the idea was that it was better to marry a woman with five surnames than to be a husband and wife.

After Zheng Guanying and Li got married, their relationship was very good. At that time, Li was very busy. I often can't go home because of official business, and everything at home is taken care of by Zheng Guanyin without complaint. When Li was a prince, life was very luxurious, while Zheng Guanyin liked frugality. Although she is a crown princess, she is very simple and generous in all aspects.

Although he was so low-key, fate didn't give him more care. After the change of Xuanwu Gate, Li was killed. For his own stability, he had to kill Li's six sons, but he didn't kill his daughter.

After her husband and children were killed, Zheng Guanyin was desperate, accompanied by only five daughters. Zheng Guanyin didn't marry Li Shimin. Since then, she has lived in another hospital with five children, fasting and chanting Buddha. Li Shimin also takes good care of her. After 50 years of low-key widowhood, Zheng Guanyin died in Changle Gate in the first month of the third year of Shangyuan in Tang Gaozong at the age of 78.