Princess Gaoyang is deeply loved by Li Shimin, why did she have conflicts with her father

Princess Gaoyang was the 17th daughter of Emperor Taizong of Tang, Li Shimin. Her birth mother is unknown and she was deeply loved by Li Shimin. Below, the history encyclopedia editor brings relevant content to share with you.
Princess Gaoyang, who grew up, married Fang Xuanling’s son Fang Yi’ai. But later on, Princess Gaoyang had conflicts with her father, Emperor Li Shimin. Even when Li Shimin passed away, she didn’t look too sad. The reason why Princess Gaoyang is favored by Li Shimin is that she is beautiful and lovely in appearance, has a father like personality, and has a high status as a third born mother. Li Shimin, due to his mature demeanor, must have been very self appreciative and even self worshiping. He naturally indulged and unrestrained his daughter, who looked like him, which made Princess Gaoyang’s temperament even more independent, arrogant, and willful. In order to win over his most important minister, Fang Xuanling, he promised his beloved daughter, Princess Gao Yang, to the Fang family as a show of favor. However, Gao Yang’s personality problems have caused chaos for the Fang family, and even Li Shimin, who dotes on him, may be confused. Due to his special affection for this daughter, he was blinded by her flaws.
Why did Princess Gaoyang, as the beloved daughter of Emperor Taizong Li Shimin, have conflicts with him? Princess Gaoyang was deeply loved by Li Shimin. At that time, the minister Fang Xuanling was not only very prestigious, but also made great contributions. He was conferred the title of Duke of Liang and made great contributions to Li Shimin’s governance of Zhenguan. Therefore, Fang Xuanling was also highly valued by Li Shimin, and his son was able to marry Princess Gaoyang. However, Princess Gaoyang’s husband Fang Yi’ai was not the eldest son of Fang Xuanling. Fang Xuanling’s eldest son was Fang Yizhi, so Fang Yizhi was able to inherit Fang Xuanling’s title. Princess Gaoyang was favored and delicate, so she wanted Fang Yi’ai to inherit the title, which led to conflicts between Emperor Taizong of Tang and Princess Gaoyang.
In addition, Princess Gaoyang had an affair with Bianji after her marriage, and Emperor Taizong of Tang was furious when he found out that his daughter had an affair with a monk. In his anger, Emperor Taizong executed Bianji. As a result, Princess Gaoyang began to have a rift and conflict with Li Shimin. Although there is still controversy over the authenticity of the matter between Princess Gaoyang and Bianji, there is still a conflict barrier between her and Li Shimin.
After the death of Li Shimin, Li Zhi ascended to the throne as emperor. She and Fang Yiai were found to have intentions to rebel against King Jing Li Yuanjing, and not only were they dealt with, but even the Fang family was implicated and suffered a catastrophic disaster. Therefore, this incident has a wide range of implications, and the Fang Xuanling family has almost been completely wiped out.