Why did the great monarch Li Shimin poison his son Li You regardless of his feelings?

The famous emperor Li Shimin poisoned his son Li You because of Li You's rebellion. In fact, Li Shimin was not his eldest son, but he became emperor because of the change of Xuanwu Gate, which made Li You, who was not the eldest son, admire and yearn for him. So he later launched a war, but he didn't realize his own strength well and failed.

Li You's mother is Yin Shi, and her name is not recorded in the history books. His father is Shi. In those days, he was killed by Tang gaozu because of his enmity with him. After Yin Shi Shi was killed, his daughter Yin Shi was assigned to Li Shimin as a concubine by Tang gaozu, so he was not the eldest son and had no chance to be emperor, but Li You was unwilling and too conceited.

In fact, as long as Li You is not greedy, it is certain that he will be a carefree prince and live a good life in his fief. After all, the Tang Dynasty was in its heyday, but he was determined to learn from his father and wanted to launch a war to replace his father Li Shimin as emperor. However, it can only be said that in Li Shimin's view, his behavior is just a joke.

In fact, it's not that Li Shimin wants to poison his son regardless of his family, but that the son is too stupid to see the facts clearly. If he had a little intelligence, he wouldn't do such a thing. It was not Li Shimin who gave his son a death, but Li You who succeeded in "dying". On the contrary, Li Shimin is very concerned about his family. After Li You's death, he was buried in lord protector. The emperor can't do it in his life. Let's be a good report below. Although Li Shimin became emperor through the Xuanwumen coup, he was also a generation of monarchs and was famous in history.