Princess Gaoyang, the beloved daughter of Emperor Taizong Li Shimin of the Tang Dynasty, her mother is unknown.
The princess fell in love with Emperor Taizong and married Fang Yiai, the son of the famous minister Fang Xuanling. She relied on her pampering and pampering. After the princess got married, she had an affair with Bianji, the author of "The Records of the Western Regions of the Tang Dynasty". When Taizong found out, he was furious and cut Bianji in half and killed dozens of his slaves. The princess was very resentful. Taizong died without a mournful face.
In the fourth year of Yonghui, the princess wanted to seize the title inherited from Fang Yiai's brother Fang Yizhi, and falsely accused him of being rude to her. After being interrogated by Changsun Wuji, it was revealed that the princess and Fang Yiai planned to support Li Yuanjing, the king of Jing, and rebelled. Emperor Gaozong of the Tang Dynasty ordered her to commit suicide.