Chu Mo, a modern person, travels back to the first year of Zhenguan in the early Tang Dynasty, and unexpectedly meets Li Zhen, who is disguised as a man, and his fiancée Yang Hongyu, who is highly skilled in martial arts. With his modern cooking and arithmetic skills, he went from pretending to have amnesia to avoid disaster, to showing off his cooking skills at Shiweitian Restaurant to revitalize his business, to helping Li Zhen find out the deficit of the grain store, and propose drought relief strategies, and gradually established a foothold in Chang'an. He and Yang Hongyu went from being a couple in name to knowing each other and falling in love. They fulfilled their engagement promise with their "top ten in Chang'an" arithmetic skills and gained the trust of many friends. In the end, Chu Mo made food his first priority and lived a comfortable "salted fish happy life" with Yang Hongyu, writing an ordinary but warm time travel story.
