Li Shen, the tenth son of Li Shimin, a modern time traveler. Unlike other time travellers, Li Shen has no system or plug-ins. He only relies on more than 30 years of common sense in life and business thinking to stay away from disputes about reservations and become a leisurely king. The series focuses on "building roads to promote business." The main line shows that Li Shen, without the blessing of golden fingers, used his wisdom to resolve the difficulties of the family, the suspicion of the court and the technical difficulties, and finally won the trust of Li Shimin and the support of the people with his achievements in people's livelihood, writing a legend of the prosperous Tang Dynasty of "resulting the country through hard work".
