After leaving Yaojin Palace, Kong Hongjun arrives in Chang'an to battle demons and forms a bond with exorcism squad chief Li Jinglong.

Having lived his entire life on Mount Taiheng, half-yao Kong Hongjun is at last presented with the chance to explore the human world. He is assigned three tasks: uncover his father's murderer, eliminate the Black Jiao and its yao tribes that have infiltrated Chang'an, and return the Heart Lamp to a descendent of the Chen family. However, on his first night in the city, the Heart Lamp is mistakenly absorbed by military general Li Jinglong. After receiving a mysterious invitation to join Chang'an's Court of Exorcism, Kong Hongjun is reunited with a disgraced Li Jinglong as his captain. Alongside a fellow yao, a noble from a foreign land, and a cowardly scholar, Kong Hongjun and Li Jinglong must work together to purge Chang'an of the yao lurking in its streets. In the meantime, Kong Hongjun also needs to hide his true identity from Li Jinglong who loathes yao-all while attempting to retrieve the Heart Lamp from his body.—MyAnimeList

Tianbao Period. Kong Hongjun, a young man who was ignorant of worldly affairs, came to Chang'an with three important tasks and entered the Great Tang's Exorcist Department. Inside the department, he led a ragtag group of yao-vanquishing experts together with Li Jinglong, commander of the Longwu Army. And this, is the story of how they wrote out the Great Tang's Yao-vanquishing Records.—AniList

In the twelve years of Tianbao, Kong Hongjun, a handsome young man who is not familiar with the world, left the Yaojin Palace on the Taihang Mountain with three important tasks, and came to Chang'an, which is full of prosperity. Kong Hongjun first entered the Datang Exorcism Division, and the head supervisor was actually Long Wujun general Li Jinglong who had dealt with it not long ago. But he accidentally broke the Chen's heart lamp, and the heart lamp entered Li Jinglong's body. In the light and shadow of the lamp, there are the bright red lights of Pingkangli, the exorcism of the sycamore in the summer sunshine, the vast sky and sand and flying snow, the peaceful singing of Artai. Mo Rigen and Lu Xu picked off early morning leaves, Qiu Yongsi's flying strokes.—Bilibili TV