Luoyang, the ancient capital of thirteen dynasties, hides the past and present in one city. During the day, tourists flocked to the place, and fireworks were common; at midnight, the night world emerged, and countless obsessions rooted in history took shape, turning into strange stories passed down from generation to generation in the old city. Antique shop owner Chen Wang, who has the heritage of the night watchman, relies on the power of recalling objects to see the tragic past carried by ancient buildings and old objects; criminal investigation police officer Lin Tinglan adheres to scientific legal principles and persists in tracking down the man-made crimes hidden behind the visions. The two went from being at odds with each other to walking side by side, walking through ancient cross streets, the Yingtianmen ruins, and the banks of the Luoshui River, one by one unraveling the layers of secrets that entangled the Sui and Tang Dynasties, the Republic of China, and even modern times. The unprovoked alleyway of lanterns covers up the conspiracy of smuggling cultural relics, the sound of chisels in the middle of the night at Tianmen tells the story of the blood and tears of the workers in the prosperous Tang Dynasty, and the red rain in Luohe River and the wedding doll reveal a century-old shipwreck tragedy. The strange events that are like rules and ghost stories are never empty ghosts, but the deep regrets left by history and grown in people's hearts. The mysterious organization "Gui Zang" covets the destiny of the country in Luoyang for thousands of years, trying to open the door to the divine capital and overturn the balance between the two worlds. In order to protect the entire divine city, Chen Wang used forbidden magic, while Lin Tinglan used the power of criminal investigation to stabilize the real world, and completed the decisive battle between the two realms in front of the Longmen Lushena Buddha. The storm has settled, the vision has disappeared, and the fate has come to an end. Chen Wan and Lin Tinglan, who had lost their powers, stood in the old city in the early morning. A bowl of beef soup dispelled all the strangeness of the long night. This book is based on Luoyang's local folk customs, monuments and history, and is wrapped in suspense and strange stories. It describes the vicissitudes of the prosperous ancient capital and reveals the truth: there is no evil god in the world, and obsession traps all living beings.