In the ninth year after the establishment of the Tang Empire, the war between Li Shimin, King of Qin, and the Crown Prince for the throne was so fierce. That night, the love princess built by the Crown Prince once asked the court painter Yan to paint her portrait, but was sent by the Crown Prince to accompany her to drink.
After the completion of the project, the crown prince transferred troops from the king of Qin in the name of public defeat and guarding the border, and invited Taizong to an appointment in the name of public defeat and farewell in an attempt to get rid of Taizong. At this time, Wei Zhi, the counselor built by the Crown Prince, has dug a pit outside the city, waiting for the burial of Emperor Taizong. Emperor Taizong took the lead, exposing and reprimanding the crown prince for completing the project and losing Yuanji's trick.
The crown prince is still unwilling to finish his work. He even used his love for Princess Dai Ji and proper relationship of Li Shimin to entice Emperor Taizong to drink this wine. Emperor Taizong almost died, so he killed the Crown Prince and lost Yuanji. Emperor Taizong sought the general stationed at Xuanwu Gate for the Crown Prince and lured the general to meet him at Xuanwu Gate. This scene happened to be seen by General Zong's six-year-old son.
Emperor Taizong successfully launched the Xuanwu Gate incident, which eliminated the completion of the Crown Prince and the public defeat of Yuanji. Before his blood was dried, he went straight to the East Palace to show his mind to Nanji, hoping to get her forgiveness and her body and mind. Subei, whose nature is honest, originally wanted to commit suicide to be a chaste and heroic woman. Under the various refutations and confusions of Li Shimin, Subei obeyed Emperor Taizong on the condition that the crown prince was not killed to complete the fifth son.
When the debate machine saw Emperor Taizong, the hatred buried in his heart for many years suddenly rose in Ran Ran. Tang Xuanzang took advantage of the opportunity that the emperor had something to do, and explicitly asked to go to Indonesia to study algorithms in the Western Heaven. Emperor Taizong refused Tang Xuanzang's request on the grounds that the border war continued. Emperor Taizong asked Tang Xuanzang to choose a university to invite monks into the palace, which guided Xie Ji into Buddhism. Tang Xuanzang's choice of a university monk for Xie Ji happened to be a debating machine.