The male protagonist, Su Chen, is a modern 996 social worker. He is educated in arts and sciences and understands basic chemistry, literature and history, and business operations. He dies suddenly due to staying up late and becomes the legitimate son of the Su family of the Dayong Dynasty. He was originally a foolish scholar who came from a declining family: his father died young and his family property was misappropriated by his relatives, leaving only a shabby house and an old servant. He was born foolish and was ridiculed by his neighbors. He only left behind a marriage contract with the Lin family—— The Lin family was a scholarly family, but because there were no sons for three generations, they were oppressed by two branches of the family and were on the verge of bankruptcy. In order to protect themselves from the marriage status of "the legitimate son of the Su family", they did not break off the engagement, but they were also helpless about this "silly son-in-law marriage".
After Su Chen's soul passed through, the fool's consciousness awakened, and modern IQ crushed the ancient bottom class. He got rid of his reputation as a fool at the beginning, and held the golden finger of modern knowledge. He set two goals: First, rely on the imperial examination to change his destiny, and win all the way from the county examination, township examination, and provincial examination to the palace examination. The second is to accumulate wealth by making homemade mosquito repellent incense, toilet water, distilled liquor and other modern daily necessities, humiliate the original tribesmen in the face, protect the heroine of the marriage contract, and finally achieve a perfect life of "imperial examination, freedom of wealth, and the protection of the three beauties".
