Shen Yuejian was carefully groomed by her aunt, with the intention of being sent to a high school as a concubine, but due to a gifted marriage, she accidentally became the head wife of the cold-faced servant Pei Yan. Pei Yan had a weak foundation in the court and was repeatedly squeezed and suppressed by the prince's party. In desperation, he begged Shen Yuejian to teach her the skills she had learned over the years in dealing with the queen's family, showing weakness to avoid disaster, and observing people's behavior. When Shen Yue saw him, he taught him all he had learned in his life. Unexpectedly, Pei Yan was so talented that he used his ingenuity in dealing with the affairs of the back house to the court. After several confrontations, the prince was unable to refute, and he successively defused the traps of his political opponents. Based on this step by step, he was recognized by the superior and was promoted to three levels in a row.