Chen Yan traveled through time. When he opened his eyes, he saw an oil lamp, a stack of files half as tall as a man, and a brush with the ink completely dry. Dayong Dynasty, Qingxi County, Household Assistant - at best, he is an assistant, at worst, he is a temporary worker: all the work that the scribes do not do belongs to him, and the subsidy for the night shift is two Hu biscuits, regardless of porridge. I took the county examination three times but failed. The leader said parting words: "Young people, work more, it will be a blessing." OK. I worked overtime in my previous life until I traveled through time, and I will continue to work overtime in this life. Only this time, someone else's golden finger was the system, internal strength, and photographic memory. His golden finger only had eight years of working experience in a large factory: timeline, relationship between characters, focus of controversy - three sheets cut out of paper, which gave a property case that had been involved for three years and failed to be clarified by two magistrates overnight, found direction overnight, and also made the county magistrate, who had been suffering from insomnia all year round, stand in front of his desk late at night. From then on, Qingxi County has an assistant who must solve the case, a girl named Liu Mei whose record of lawsuits is thicker than bricks, a female doctor Su Banxia who feels her pulse like weighing medicine and her account books are clearer than medicine cabinets, a widower who specializes in dealing with the dead and only believes in traces rather than words, Gu Qingwu, a silk shopkeeper who can weigh two weights of silver in his hand, and Zhao Dali, a martial arts idiot who always "knows the world's greatest" when it comes to making plans. From a temporary worker in the county government, to settling the general accounts for the entire dynasty - Chen Yan: Let's make an agreement first, and you will have to pay more if you become a regular employee.