The tang dynasty from Li Shimin to Wu Zetian to Li Longji, the most prosperous historical period of the Tang Dynasty, is also the most proud period of unprecedented prosperity in China. As one of the most elegant dynasties in ancient history, the restraints on women were also the most relaxed. China's only female emperor to go down in history is also from this dynasty.
Although Wu Zetian usurped the throne of her son, her contribution to the country was very large, and her son Li Xian succeeded to the throne after Li Zhi, but the power in the court was basically still in the hands of Wu Zetian, because Li Xian was very annoyed by Wu Zetian's oppression, and often opposed her, and finally was forced to give up the throne, replaced by his obedient son Li Dan, who later became emperor.
He did not dare to disobey his mother's actions at all, and did everything according to Wu Zetian's will, and later directly went to the court directly with his mother, and he was just a puppet. Suffering from this kind of up-and-down life, Li Dan directly ceded his throne to his mother, after which Wu Zetian was able to claim the title of emperor and become an empress.
In fact, although Li Dan is weak, his approach is also a wise choice, without this step he took, he may not have a piece of his own sky in his life. After Wu Zetian abdicated, her son became emperor again. Later, Wei Shi wanted to occupy the throne of the Tang Dynasty, and it was Li Dan's son Li Longji who quelled the disaster at that time.
Li Chengqi, the eldest son of Emperor Li Dan at that time, was a veritable prince in the ancestral system of the crown prince li chang at that time. However, in his opinion, his younger brother Li Longji was the true talent of the king, and unexpectedly he ceded his position as prince to his younger brother Li Longji. The throne of the crown prince will determine who will become the successor emperor, which is casually allowed to go, li Longji even if he covets the throne, but he does not dare to openly accept it.
Later, because of his resignation, Li Chengqi still cried and pleaded in front of it, which was an interesting thing that had never been seen in history before, and some people were willing to give up their future emperor's position to others and give up the supreme glory under the heavens.
Later, after Li Longji succeeded to the throne, Li Chengqi has been assisting him, and he has no complaints, and never fights for power and profit. All this also made Li Longji attach great importance to his big brother, whether it was a treasure or anything, he was willing to take it out and share it with him. This is also a brotherly connection between the emperors in history, and it is also because of the abdication of the eldest son that the prosperity of the Tang Dynasty has once again continued for decades. After Li Chengqi's death, Li Longji posthumously honored him as "Emperor Jean".