There were many reasons for the rebellion during the Zhenguan period. Among them, the reason why Li Chengqian rebelled was because he was worried that his position as Crown Prince would be unstable and he was worried that he would be deposed. As for Li Yuanchang, he was reprimanded for breaking the law many times and resented Emperor Taizong. In addition, Hou Junji felt that he had been treated unfairly, and he was filled with resentment. These factors led to many rebellions during the Zhenguan period.

Li Chengqian, the crown prince of Zhenguan, was the eldest son of Li Shimin, Emperor Taizong of Tang Dynasty. According to document 3, he suffered from two major illnesses in the fifth and seventh years of Zhenguan respectively, possibly caused by diabetes. Diabetics could lead to leg disability, which could be one of the reasons why he was disabled. Other documents mentioned his debut in the first year of Zhenguan, his life in the Eastern Palace, and his interactions with his parents. However, the information about his specific deeds and achievements was not clear. Therefore, I don't know much about the Zhenguan Crown Prince Li Chengqian.
Zhenguan crown prince Li Chengqian is not wrong.
Zhenguan Invincible Crown Prince Li Chengqian was the eldest son of Emperor Taizong of the Tang Dynasty, Li Shimin. He was made Crown Prince during the Zhenguan period. However, due to his bad habits and involvement in rebellion, he was eventually deposed as a commoner and exiled to Qianzhou.
Zhenguan Crown Prince Li Chengqian's latest chapter is Chapter 996-The Beginning of a New Era!
Zhenguan Invincible Crown Prince Li Chengqian was eventually deposed as a commoner. During the fight for the throne between Emperor Taizong of the Tang Dynasty and Li Tai of the Wei Dynasty, Li Chengqian was deposed due to his rebellion. This court dispute had an impact on the fate of the officials involved. Li Chengqian's epitaph also mentioned his experience of being humiliated by the Lord and deposed by the ministers. However, the search results did not provide any information about his fate and life. Therefore, there was currently no definite answer to the outcome of Zhenguan Invincible Crown Prince Li Chengqian.
Zhenguan Crown Prince Li Chengqian's latest chapter is Chapter 996-The Beginning of a New Era!
The full text of Li Chengqian, the crown prince of Zhenguan, was restricted to free reading.
Yes, Li Chengqian was made Crown Prince. After Emperor Taizong Li Shimin ascended the throne, he immediately made Li Chengqian the Crown Prince and placed high hopes on him.
Yes, Li Chengqian was the eldest son of Emperor Taizong of the Tang Dynasty, Li Shimin, and was made the crown prince. He had been conferred the title of King Heng Shan when he was young, and was later made Crown Prince after Li Shi Min ascended the throne. Li Shimin had placed great expectations on him and arranged excellent teachers to teach him Confucian classics. Li Chengqian also performed well in government affairs and was given a certain responsibility. However, there was no clear answer to why Li Chengqian wanted to rebel.