Li Chengqian is the crown prince, why does he want to kill his brother?

This is because he has already felt threatened, and the other party's rights are already very large, because of some actions of the emperor, so it led to this choice.

To some extent, his tragedy is the tragedy of all emperors in the feudal era. Li Chenggan has grown up under the protection of the queen since he was born. He has been a good boy since he was a child, and he has steadily advanced according to the route set by his father Tang Taizong.

However, after the death of Empress Changsun, Empress Changsun acted as a good buffer between herself and her father without her mother, which made the contradictions between Tang Taizong and Li Cheng gradually appear.

Answer: Because Li Chengqian thought that his father Li Shimin's light was too dazzling, he might have to wait until after his father's death to take the throne.

The main reason is that Li Chengqian feels that his position as the crown prince is unstable, so he wants to do this.

Because Li Chengqian was not satisfied with the current situation, and people's desires were getting bigger and bigger, he hoped to become the emperor soon, so he rebelled.

Because he realizes that the emperor will eventually ignore him, he must act on his own to win the throne.

First, the prince has been the prince for too long, he was the prince at the age of 8, and he has been the prince for 17 years, and it is normal to be dissatisfied.

The second is that Li Tai, the king of Wei, participated in the seizure of the heir, but Li Shimin did not refuse this kind of thing. This is very reminiscent of what Li Shimin did back then.

The third is that Li Chengqian injured his foot and became a cripple, and his personality changed as a result. And later Empress Changsun died......This is the same as the death of Empress Dou in Li Shimin's meeting, and the impact is very bad.

Fourth, some civil officials did things, and both positive and negative aspects made him a person who was not suitable for being a prince.

Although Li Chengqian is the crown prince, Li Shimin does not like him, and he is worried that Li Shimin will abolish him.

Because he was worried about his murder of Li Tai**, this incident was enough for Li Shimin to abolish himself, so he took the risk to rebel.

Because he was afraid that something else would happen, he wanted to start early.

Mainly:1The deposed prince holds a grudge; 2.jealous of Li Tai's favor; 3.Provoked.

Li Chengqian's ending was that he was completely deposed after the failure of the rebellion, and finally exiled to a foreign land.

Li Chengqian's rebellion was learned from Li Shimin. Li Shimin played the Xuanwumen Revolution and killed the crown prince Li Jiancheng. Let Li Chengqian know that the prince is useless, only what he grasps in his hands is his own, just like Li Shimin.

Because he couldn't wait to be the emperor, he didn't want to wait until his father died to pass the throne to him, so he rebelled, and in the end he could also be put in prison if the rebellion failed, and finally died.

Because he was worried that his position as the crown prince was unstable, after all, Li Tai was more and more liked by Li Shimin; In the end, he was demoted to the common people and exiled, which was the result of Li Shimin's painstaking preservation.

Li Chengqian, Prince Lin, was right, but later became ill and disabled, was disliked by Taizong, competed with Lin Li Tai for the crown, was deposed and deposed to Guizhou, and died of illness at the age of 27.