Liu Shuyang is a detective. In an accident, he traveled to the Sui and Tang Dynasties, and stayed in an inn to work for a while in order to survive. He met a friend who traveled through time like him. Qin Feng. During a trip, they came to a hotel and accidentally discovered that there was a dead body hidden under the floor. From then on, the two began to investigate. From then on, they began to secretly investigate the matter. It led to all kinds of bizarre things. The relationship between the two is also budding. Please listen to me slowly tell the story of this prosperous city of Chang'an...
Intention: reasoning