When she got married, Li Shimin calculated a divination for her, which was auspicious, but also tragic.

Li Shimin, Emperor Taizong of Tang Dynasty, always loved the children born to himself and his eldest grandson, and Princess Chengyang was one of them. When the princess reached marriageable age, Emperor Taizong married her daughter to Du He, the second son of Du Ruhui. Thanks to the princess, Du He was still in the royal status, and he was named Xiangyang Gong.

Du He is the confidant of Prince Li Chenggan (the eldest son of Emperor Taizong). Li Chenggan had a gentle personality and political achievements in his early years, and Emperor Taizong also valued him very much. But Li Chenggan didn't stick it out. As an adult, Li Chenggan not only suffered from foot disease, but also had a bad temper. Emperor Taizong did not abolish his idea at first, but he refused to change after repeated education. Finally, he wanted to launch a coup to force Emperor Taizong to abdicate.

After the revelations, Li Chenggan was abolished as Shu Ren by Emperor Taizong and exiled to Ganzhou. As a confidant, Du He was one of the accomplices of the Prince's rebellion. After the incident, Du He was arrested, imprisoned and executed, and Princess Chengyang became a widow. Emperor Taizong didn't expect Du He to take part in the rebellion. He regretted marrying his daughter. But the boat was made of wood, so Taizong had to re-select the attached horse for his daughter.

Taizong quickly chose a new Xu for his daughter, named Xue. Xue is handsome and talented. He is the son of Wei and Xue Huaiyu. Emperor Taizong always regretted his daughter's last marriage and hoped that it would be complete. Before his daughter got married, Emperor Taizong specially invited her to divination. The result of divination is auspicious, but the wedding will be held during the day. In ancient times, weddings were held at night, never during the day.

For the sake of his daughter's happiness, Emperor Taizong changed the wedding to daytime. This behavior of Emperor Taizong violated the etiquette system and was strongly opposed by Ma Zhou, the prime minister of the early Tang Dynasty. Finally, Emperor Taizong had to change the wedding to the evening. Although the wedding was not held in the daytime, the princess and Xue got married harmoniously and gave birth to three sons (Xue, Xue Xu and Xue Shao).

Li Zhi acceded to the throne, became Tang Gaozong. Emperor Gaozong loved the princess (sister) very much, and it was recorded in the history books: "The friendship is extremely deep." In 622 AD, the princess was seriously ill. Emperor Gaozong invited the best doctor to treat her and went to see her in person. Later, the princess heard that Zen master Farang of Qingliu Temple could make him recover, so Emperor Gaozong invited the Zen master to the palace to chant scriptures for his sister, and his condition really improved.

After the princess recovered, she thanked the Zen master very much, and asked her brother to change the Qinglong Temple into Kannonji, and also gave the Zen master a large reward. Seeing his sister recovered, Emperor Gaozong agreed happily. But the good times did not last long, and the princess's witchcraft was exposed. In the history books, there is no mention of Princess Chengyang's witchcraft. We still don't know why the princess practiced witchcraft.

After the incident, his sister was not punished, but Xue was tired by the princess and was demoted to secretariat. The princess can't go to work in Zhoufang with her husband, but out of guilt for her husband, the princess followed her husband to Zhoufang. This matter, if it were someone else, would definitely be put to death, but Emperor Gaozong deliberately defended his sister and only demoted his brother-in-law to Zhou Fang.

The princess didn't live in Zhoufang for long and died in 67 1 year. After the princess died, Xue also died. When Gaozong learned that his sister had died, he was very sad. On the fifth day of his accession to the throne, Hugh sent his sister's and his wife's coffins back to Beijing and buried them in Zhaoling. Emperor Gaozong always loved his sister very much. In 68 1 year, Emperor Gaozong married his little daughter Princess Taiping, who was born with Wu Zetian, to his sister's son Xue Shao.

The wedding of Princess Taiping and Xue Shao was very grand. The lighted torches burned all the trees along the way. In order to let people pass through Ma Shunli, the roadside wall was also pulled down. The story of Princess Taiping and Xue Shao is not like the TV series Poems in Daming Palace. Historically, Xue Shao didn't get married before Princess Taiping married him, and they had a good relationship after marriage.

But in the TV series, Xue Shao used to have a wife. Out of love for Princess Taiping, Wu Zetian gave Xue Shao's wife a gift to cover up the fact that Xue Shao was married. Xue Shao thought that the marriage with Princess Taiping was disloyal to his dead wife, and finally chose death. Historically, Xue Shao was burdened by his eldest brother Xue, who rebelled against the imperial clan of the Tang Dynasty. Wu Zetian put Xue to death, and Xue Shao was beaten one hundred times and starved to death in prison.

Throughout the life of Princess Chengyang, it is quite tragic. The first marriage ended in failure. Although the second marriage was happy, it brought trouble to her husband because of her temporary fault, and the ending of her sons was not very good, which was a sorrow of capital.