The heroine was murdered by her stepmother when she was young and lost her voice. On the surface, she is a mute daughter who can be manipulated. In fact, she has secretly memorized the "Supplement to the Tea Book", "Notes on the Clan's Wife's Rituals" and "Salt Tea Rules" for ten years. She used the identity of a mausoleum guard to guard the ancestral tomb for three years to review the family's account books and personnel connections. After returning home, she used "muteness" as a shield and resumed control as a tea master. In the tea house, tea soup was used to test for poison, tea banquets were used to set up bureaus, and tea taxes were used to eliminate clan corruption. They overturned the stepmother's mask of false filial piety, the concubine's substitute conspiracy, and the family elder's plot to seize the family. Finally, in the imperial tea debate, the lost "ice-patterned snow bud" technique shocked the government and the public, and was awarded the title of "Mrs. Zhenhui Tea", completely reconstructing the power structure of the family.