In the first year of the First Heaven (712), Emperor Ruizong of Tang li dan took the initiative to give way to the crown prince Li Longji for Emperor Xuanzong of Tang. At that time, many people thought that Tang Ruizong's initiative to abdicate the throne would make Tang Ruizong and Tang Xuanzong become models of emperors and fathers and sons. However, in the second year of the first heaven (713), Tang Xuanzong launched a coup against the abdicated Tang Ruizong, staging a rare drama of "His Majesty's rebellion".
Friends who know the history of the Tang Dynasty know that Tang Ruizong Li Dan became emperor for the second time by relying on the support of his sister Princess Taiping and son Li Longji. Li Longji, who eliminated Empress Wei's party, supported his unsuccessful father as emperor not because of filial piety, but in exchange for li Dan as emperor, Li Danli himself as crown prince, so that he could become the next emperor.
Coupled with the fact that Li Longji's talent was slightly superior to that of Tang Ruizong and Li Dan in all aspects, the coup heroes who supported Li Dan's ascension to the throne and the loyal and important ministers represented by Yao Chong and Song Jing all supported Li Longji. From the day of his second ascension to the throne, Li Dan was worried that Li Longji would take the throne ahead of schedule, so he supported Princess Taiping to resist Li Longji, which led to the split of the imperial court and made Tang Ruizong Li Dan exhausted.
So Li Dan decided to give way to Li Longji in order to satisfy Li Longji's ambitions. Because Li Dan's abdication was not purely sincere, Li Dan made a decision that he thought was clever but was actually seriously wrong - to give way and not to hand over power. After Li Longji ascended the throne, the supreme power was still in the hands of Emperor Taishang Li Dan, and Li Longji could not even participate in normal court ceremonies.
What's worse is that Tang Ruizong Li Dan felt that his decision to give way to his son Li Longji had failed princess Taiping, and princess Taiping was the best candidate to balance Li Longji. As a result, Princess Taiping, with the support of Emperor Li Dan of Taishang, turned to power and eliminated dissidents, and five of the seven prime ministers of the dynasty were Taiping Princess disciples, while there was not even one chancellor who supported Emperor Li Longji.
Because of this, when Li Longji became emperor and had less influence on power than when he became crown prince, Li Dan's forcible separation of imperial power from the emperor became an irreconcilable contradiction between father and son. As for Li Dan, the Emperor Taishang, who refused to hand over power, Li Longji had two choices at that time: the first was to wait until Li Dan died and naturally take back power; the second was to launch a coup d'état to seize power from Li Dan.
According to historical records, Li Long basically wanted to wait until Li Dan died. However, in the second year of Tiantian (713), Li Dan released the wind to send Li Longji out to patrol the border, and many people suspected that Li Dan wanted to abolish Li Longji by means of patrolling. At the same time, Princess Taiping also stepped up her plot to murder Li Longji. At this time, Li Longji, who had lost his imperial power, was in danger of losing his throne.
In the second year of The First Heaven (713), Li Longji led dozens of his cronies and more than three hundred soldiers to raid the palace, killing all the prime ministers who supported Princess Taiping, and Li Dan, the Emperor taishang who fled to XuanwuMen, was also controlled by Li Longji, which was a "coup d'état of the First Heaven". Li Longji regained his imperial power through the "congenital coup", and the Kaiyuan prosperous world opened the curtain.