"Mysterious Detective Chang'an Lu" takes female promoter Su Qingyuan as the protagonist and tells the story of how she joins hands with her senior brother Shen Yanchen and other partners to solve fantasy mysteries in three volumes and protect the peace of the world.
In the first volume, Su Qingyuan went to Chang'an to find his missing senior brother, and was accidentally involved in the theft of the colored glaze hairpin from the Yaohua Palace. He gradually uncovered the conspiracy of the Netherworld Pavilion to covet ancient treasures, and foiled its plan to seize the phantom spirit fluid with Qingming's discussion. In the second volume, she went to the Western Regions to pursue clues, experienced robbery on the ancient road, and the secrets of Khotan, and found the fourth magic seal, the key to the secret realm. However, she was severely damaged by the Netherworld Pavilion. Fortunately, Shen Yanchen and others rushed to rescue her. In the third volume, the ancient well reappears in Chang'an and the wedding ceremony undergoes a shocking change. The master of the Netherworld Pavilion comes back from the dead. Su Qingyuan and others finally reveal the ancient secret of the Lanling clan being framed, and unite the forces of all clans to completely seal the glazed illusion and put an end to the Netherworld Pavilion conspiracy.
The book uses detective puzzles as clues to connect the secret realms, treasures and ethnic grievances in the fantasy world. Su Qingyuan and his partners stick to justice, grow up in crisis after crisis, and finally achieve eternal peace in Chang'an and peace in the world.
