Plus when he was a prince in Li Chenggan, he jumped up and down and abused power for personal gain. What he did has violated the bottom line of Li Shimin, but he didn't know it, which led to Li Shimin, Emperor Taizong, taking off the throne of Lee Tae for various reasons and expelling him from the capital. In a sense, what happened to Lee Tae was self-inflicted.
Li Shimin, Emperor Taizong, loved Li Chenggan very much, but Lee Tae forced him to believe that Li Chenggan was the first son born to Li Shimin and his favorite grandson, and he was established as the heir almost after Li Shimin ascended the throne. Li Shimin's love for him is beyond measure. I personally coached him in handling state affairs, and I also found the best famous teachers and scholars in the world to give him the most comprehensive education. Even Li Chenggan broke his leg while riding a horse, resulting in lifelong disability, which did not change his position in Li Shimin's heart at all.
However, due to Li Chenggan's ulterior special interests, he was discovered by Li Shimin and killed Toy Boy in Li Chenggan on the spot. In the face of angry Li Shimin, Li Chenggan felt not only fear, but also anger. Unfortunately, as the heir to the throne, this hobby is impossible to be allowed, but the occurrence of this incident also showed the lively Wang an opportunity.
Wang Tai began to make friends with the ministers of the DPRK a long time ago, and began to move up and down after the murder of Prince Li Chenggan, hoping to leave a better impression and try to change his mind and replace his successor. And he began to attack by using public opinion through various channels, or prince Li Chenggan. It can be said that Prince Li Chenggan, who was in an anxious state, was ignited by various operations of Wang Wei and Lee Tae, which also amplified the fear in his heart. Finally, someone began to plan a rebellion and eventually failed.
Lee Tae's stupid words made Li Shimin in Prince Li Chenggan feel disgusted with him, because Lee Tae naturally enjoyed profligacy after the rebellion was abolished. As the position of the prince is still vacant, he naturally has to work harder for it. His various operations finally caught Li Shimin's attention, and Li Shimin's heart began to relax gradually. In this case, Wang may still become a prince, but everything still needs approval.
However, in a chat with Lee Tae, Li Shimin heard Lee Tae describe his plan after becoming a prince: he would kill all his sons and then let his younger brother Li Zhi inherit the throne. After this sentence came out, Li Shimin felt particularly harsh. Originally, Li Shimin was in a bad situation, but Lee Tae wanted to play this trick of making way for his brothers, and he also wanted to kill all his sons.
It is cruel for Li Taihou to kill his own son for the throne, so after a hundred years in Li Shimin, Li Zhi will not be made heir, but will be killed first. Lee Tae's state of mind, how can Li Shimin look not to come out? So after Lee Tae said such a thing, Li Shimin's dislike for him rose to the extreme in an instant.
In order to keep Li Zhi, Lee Tae must lose its political influence and stay away from Beijing. After Lee Tae said this, Li Shimin began to pay special attention to Li Zhi. After his investigation, he felt that he was very rational, except for his young age, immature mind and weakness, which met almost all his criteria for heirs. Therefore, Li Shimin may have decided to make Li Zhili his successor.
However, because the dangerous Lee Tae is still Wang Wei and stays in the capital Chang 'an, it is necessary to take some protective measures for this weak Li Zhi. Therefore, Wang Wei and Lee Tae were deprived of the throne and expelled from the capital in a short time. This eliminated his influence in the capital and completely cut off the possibility of his usurpation.
Conclusion: Lee Tae used too much force to show his loyalty to his father, Li Shimin, and sent himself to the point of no return. Anyway, he deserves it. Later facts also proved that Li Shimin's choice was not too wrong. During the reign of Li Zhi, the territory of the Tang Dynasty expanded to the extreme, and the reputation of the Tang Dynasty spread to the farthest places. Even Li Shimin's unresolved Koguryo was destroyed during this period.
If Li Shimin doesn't take any measures against Lee Tae, there may be civil strife within the Tang Dynasty in the future, which is the last thing Li Shimin wants to see.