I believe that the small friends who know history know that Li Shimin was not the successor identified by Li Yuan, and Li Jiancheng was the prince identified by Li Yuan.
It was only later that Li Shimin launched the "Xuanwumen Rebellion", killing his brother Li Jiancheng and his younger brother Li Yuanji the Prince of Qi, which made Li Shimin the only concubine.
Li Yuan also had to appoint Li Shimin as crown prince, and it did not take long for Li Yuan to abdicate as Emperor Taishang, and he was depressed all day long, except that although he had conquered Jiangshan, he also caused his sons to kill each other because of this Jiangshan, and he could not even stop such an act.
For this reason, he used to be very remorseful, even depressed, but he also had hatred for Li Shimin, after all, in the past, Li Shimin and Li Jiancheng formed two factions of confrontation, but Li Jiancheng did not kill this brother, but Li Shimin could not wait for the hand.
Li Yuan was naturally dissatisfied with this son, but the imperial court had already been controlled by Li Shimin in the later stages, and Li Yuan had no right even if he wanted to punish.
However, although Li Yuan was his emperor in the Taiji Palace all day and did not participate in the government, he also did a lot of things that made Li Shimin uncomfortable.
What was Li Yuan doing in the "Change of Xuanwu Gate"
Li Shimin did make a lot of effort before launching the "Xuanwumen Revolution", after all, as soon as this coup was launched, it was unsuccessful and became a ren, and in the early stage, Li Shimin also let Du Rumei and others help him, and finally planned the world-famous changes.
Li Shimin also knew that killing Li Jiancheng and Li Yuanji was not too difficult, and the key to the problem was how to explain to Li Yuan.
In order to solve such a difficult problem, when Li Shimin launched a coup d'état, this one head killed people at Xuanwu Gate, and the other side sent Wei Chigong to Li Yuan's side to control Li Yuan's every move under the pretext of guarding.
When Li Yuan inquired what had happened, Wei Chigong said that it was the crown prince Li Jiancheng and the Qi king Li Yuanji who plotted rebellion, and it was reasonable to say that the crown prince was the successor of the imperial court, how could he possibly rebel, and Li Yuanji followed the prince, and he chose to rebel, was it not to add to Li Jiancheng's blockage?
Li Yuan had been in the battlefield for a long time, and when he was the Duke of Tang in his early years, he repeatedly escaped the suspicion of the Sui Emperor, and he knew deeply that it was Li Shimin and Li Jiancheng's factions that were fighting, and the situation showed that Li Shimin had already won, and Li Yuan had no choice but to cater to Li Shimin, otherwise he would also die in this change.
Since he was already controlled, Li Yuan also had no real power, and three days after the coup, he summoned Li Shimin as the crown prince, and after that, he did not participate in political activities, and in about two months, he abdicated as the Emperor Taishang, and Li Shimin officially became the second son of the Tang Dynasty.
The result of Li Yuan's revenge
Although Li Yuan did not have any real power, he still brought great difficulties to Li Shimin in the later period, which Li Yuan probably did not know until his death that it would bring such great distress to Li Shimin.
After becoming the Emperor Taishang, Li Yuan basically had nothing to do, basically took a pipa, practiced all day, and then it was a life of food color.
Later, Li Yuan gave birth to 30 children, and there were as many as 17 sons.
This is nothing for Li Yuan, but for Li Shimin, this is a lot of tedious things, only the lives of these 30 younger brothers and sisters have to be arranged by his big brother, and in the later stage, their marriage problems must also be handled by him.
The canonization of the princesses and the titles of these younger brothers must be arranged by him, and the officials who seal them cannot be too large, otherwise it will affect his later rule.
In the later han dynasty, Li Yuanchang, he participated in the conquest of the concubine by the crown prince Li Chengqian, and even wanted to kill Li Shimin, but this change was quickly put down by Li Shimin, after all, Li Shimin still became emperor by this means.
The other younger brothers were all faint-hearted people, most of whom caused trouble outside, and Li Shimin had to wipe their butts in the back, especially Li Yuanbao, the king of Teng, who was always reported by local officials.
epilogue
In the face of these younger brothers and sisters, Li Shimin still cares very much about family affection, as long as they do not commit any particularly big mistakes, Li Shimin will forgive, at least their lives are indispensable to wealth.
However, after Li Shimin's death, although Li Zhi took the throne, the real power behind him was Wu Zetian, and Wu Zetian was a woman who did not hesitate to use means for power, and the person who could most influence her dictatorship at that time was Li Tangzong.
In order to solve these people who hinder her, she only needs one trick, that is, to kill them all. The royal family surnamed Li was basically killed by her, and it didn't matter if they had ever committed a crime.