The background of the story is the Sui and Tang Dynasties. The protagonists of the story are Master Xuanzang Chen Yi (Chen Yi) and Taizong Li Shimin (Li Jingting) of the Tang Dynasty. The character's date of birth and name have been changed, please do not make any excuses.
The love story of a monk and an emperor, Chen Yi and Li Jingting met. Li Jingting rehabilitated the Sui Dynasty and was deeply trapped in the Western Regions. In order for Li Jingting to survive the difficulties, Chen Yi pretended to go to the Western Regions to obtain scriptures and went to the Western Regions. After bringing back the scriptures, he was hailed as a holy monk. On the way back, due to the great influence of the holy monk's name, the eldest prince and the second prince decided to intercept and kill him for the sake of the throne. In order to protect Chen Yi, Li Jingting ruthlessly launched the Xuanwumen Revolution and became Emperor Taizong of the Tang Dynasty.
One became a holy monk and the other became Taizong. No matter how open the Tang Dynasty was, it was impossible for the Tang Dynasty to accept the cutting off of religious and political leaders, so the story of Xuanzang's Journey to the West has been adapted to this day.
Under the city gate, the story ends with the sound of "royal brother".