Chen Yan, a graduate student in the Department of Modern History, unexpectedly traveled to the early Tang Dynasty and became Yuan Tiangang, known as the "Master of Magic". When Emperor Taizong Li Shimin of the Tang Dynasty passed away, Changsun Wuji and other powerful ministers forced him to swear an oath to "protect the Tang Dynasty." However, Chen Yan saw through the corruption of power under the surface of the prosperous Tang Dynasty, and determined to break free from the shackles of "alchemists assisting the Tang Dynasty", stirring up troubles with his wisdom and conquering the world.
He lurked in Chang'an, opened a "Star Observation Hall" in the name of stargazing, secretly built the "Tianji Pavilion" spy network covering the whole country, used the strategy of "hiding the truth from the truth" to plant his spies, and used the "disturbance strategy" to stir up the suspicion of the emperors and ministers of Li Zhi and Changsun Wuji.
After Li Shimin's death, he took control of the military power by quelling the rebellion of Li You in Qizhou, and recruited the rebels to form the private "Xuanjia Guards"; he also used "distant diplomacy and close attack" to unite Tubo and Turks to contain the Tang Dynasty, and used the strategy of "encircling Wei and rescuing Zhao" to resolve the pressure on Chang'an to reduce power, and gradually brought Henan, Anxi, and Jiangnan into his sphere of influence. From instigating a clan rebellion to split the land and dividing the territory, to marching to Chang'an to seize the jade seal handed down by the country, and then to ascending the throne and changing the Yuan Dynasty to "Tianshu", Chen Yan always used the "Thirty-six Strategies" as his bones and the spy network as his blade. Amidst the swords and shadows of the palace machinations and the blood and fire of the border conquests, Chen Yan gradually disintegrated the foundation of the Tang Dynasty.
After ascending to the throne, he eliminated old disadvantages, developed the Silk Road, expanded sea power, and stabilized the border with "using barbarians to control barbarians", creating a prosperous Tianshu era that far exceeded the prosperous Tang Dynasty. When Yuan Tiangang, the "anti-Tang Dynasty", finally reached the 95th level, looking back on his journey, he was full of thrilling machinations and machinations. He also hid a modern soul who reshaped and took responsibility for the troubled times, and finally achieved a great success.