The Gua stall in Chang'an West City was drenched by the rain. Lin Zhao was groping and calculating with his eyes closed: "The guest official seal hall is dark, and there will be blood within three days." Before he finished speaking, the Yamen servant kicked the Gua table and threw a bloody dagger: "The murderer used this knife in the rainy night serial murders!" As soon as his fingertips touched the blade, blood mist exploded in front of his eyes: the murderer in soap clothes was strangling the girl's neck, and there was a red mole on the back of her neck... Three In the future, the Tai Chi Palace was brightly lit, and Li Shimin took pictures of the crime: "You said the murderer was the watchman of the city gate building?" Lin Zhao waved the wet hexagram flag and sneered: "His Majesty sent someone to peel off the skin on the back of his neck - under the red mole, there was a tattoo of the word 'ghost face'." From a "charlatan" on the street to a "Tang Dynasty Detective Envoy", his hands that "can see the truth in everything he touches" will from now on overthrow Chang'an!