A modern history graduate student unexpectedly transmigrates into the body of Ye Fashan, a Taoist priest in the early Tang Dynasty. Bearing the memories of two lifetimes, he must inherit the legendary Taoist magic and talismanic powers of this historical figure, while also examining this era of coexistence of Buddhism and Taoism, and the undercurrents of foreign religions, from a modern perspective. From his initial enlightenment at a Taoist temple on Mount Kuocang to his wandering experiences in the streets of Chang'an, he uses talismans to exorcise evil and perform rituals to protect the people. He also uses his insightful understanding to dismantle the sorcery of Nestorianism (Catholicism)—exposing the "holy water" scam in Liulin Town, breaking the insidious "blood lotus formation" in Guanzhong, and step by step thwarting the conspiracies of alien forces like A Luo Han. He befriends Li Jing, enlightens Li Shimin, and uses a dream to determine the fate of the emperor on the eve of the Xuanwu Gate Incident; furthermore, in the thirteenth year of the Zhenguan era, he personally enters the underworld, using Taoist magic to rewrite the emperor's lifespan, ultimately becoming the Grand Preceptor of the Tang Dynasty. Hidden within the rituals and ceremonies of Taoism lies the profound mystery of the interaction between Heaven and humanity; within the philosophical thoughts of Laozi and Zhuangzi lies a Taoist heart dedicated to saving the world and bringing peace to humanity. When orthodox Taoism encounters the impact of extreme beliefs, and when the torrent of history meets the unpredictable changes of time travelers, Ye Fashan, wielding talismans and treading the path of divine intervention, must not only safeguard the lineage of Taoism in both the imperial court and the martial world, but also use his profound spiritual power to defend the foundation of a civilization from being devoured by cults. This is a legend interwoven with talismanic magic and historical vicissitudes, and also a song of protection for Taoism in the prosperous Tang Dynasty—Observing the Way of Heaven, determining the Way of Humanity, talismans stabilize the mountains and rivers, and the Tao reigns supreme over the world!
