In the end, Li Chengqian, the crown prince of the Tang Dynasty, was demoted to a commoner and exiled to Qianzhou. Because of his rebellion, he was deposed as a commoner by Li Shimin and eventually died in Qian Prefecture.

Li Chengqian was a character in the TV series " Brick of Tang " and was also the crown prince of the Tang Dynasty. However, there was no clear information about his ending. Some documents mentioned that he was demoted to a commoner because of his rebellion, and eventually exiled and died, but there was no specific ending. Other documents mentioned that in the novel Tang Brick, Li Chengqian successfully ascended the throne and had many children, but this information might be different from the plot of the TV series. Since I didn't provide any clear information about the outcome, I couldn't give an accurate answer.
The actor who played Li Chengqian in Tang Brick was Wang Wenjie.
In the novel Tang Brick, Li Chengqian was imprisoned after his rebellion failed. He originally had a beautiful future plan and hoped to be with Lu Xinyue forever. However, when he saw Lu Xinyue commit suicide in order to protect him, Li Chengqian no longer had any worries or fighting spirit. He sat alone in the palace and recalled all kinds of things with Xin Yue, still holding their love token in his hand. Hence, Li Chengqian's ending could be said to be tragic.
Li Chengqian's Crown Princess was Consort Su.
Li Chengqian's final outcome was that after he was deposed as the Crown Prince, he colluded with the Eldest Princess to rebel and ultimately failed to commit suicide. After he was deposed as the crown prince in the 19th year of Zhenguan (645), he was exiled to Qianzhou and eventually died there.
Li Chengqian's final outcome was to be deposed as a commoner and forced to commit suicide.
Li Chengqian's final outcome was that after he was deposed as the Crown Prince, he joined forces with the Eldest Princess to rebel and ultimately failed to commit suicide. After he was deposed as the crown prince in the 19th year of Zhenguan (645), he was exiled to Qianzhou and eventually died there.
The ending of Li Chengqian in the TV series "Tang Brick" was that he was demoted to a commoner by Li Shimin because of his rebellion, and finally exiled and died. This was different from the ending in the novel. In the novel, Li Chengqian successfully ascended the throne, married Xin Yue, and had a happy family. However, in the TV series, Li Chengqian's fate went in a different direction. He was deposed as a commoner because of rebellion, and eventually exiled and died.
There were many reasons for Li Chengqian's dark side in Tang Brick. First of all, Li Chengqian had been repressed for a long time. His childhood accident led to leg problems, and his bad behavior after he grew older became his fatal shortcoming. Secondly, Li Chengqian's split personality gradually became psychopathic under constant high pressure. In addition, Empress Zhangsun died early, causing his personality to become perverse. In addition, Li Chengqian was infatuated with the beautiful young man in the theater next door and had a private affair with the Crown Princess, which caused Emperor Taizong's anger. In the end, Li Chengqian and Lu Xinyue fell in love, but Lu Xinyue became a criminal of the court because of her family, and their relationship was hindered. These reasons led to Li Chengqian's blackening and rebellion. However, the search results provided did not clearly answer Li Chengqian's final outcome.
In the end, Crown Prince Li Chengqian was 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 information provided did not mention anything about his specific situation after that.