Jiang Wan, a modern social creature, transformed into the cannon fodder Crown Princess of the same name. The original owner was deposed because of her infatuated love for the prince. Jiang Wan decided to completely screw up and carry out the playboy character to the end, but unexpectedly saved her at the palace banquet with a mahjong score and a distilled liquor recipe, and was praised by the emperor as "a wise man as foolish as a fool"; Xiao Jingheng, his son, was disgusted with her absurdity at first, but gradually discovered that she secretly funded poor students, improved farm tools, and even used statistical models to solve the corruption case in the Ministry of Household Affairs; Jiang Wan formed a "dandy alliance" for self-protection, roping in the rich and powerful children of the capital to create inventions, and actually establishing an intelligence network ; When the war in the north began, she relied on modern logistics knowledge to optimize the dispatch of grain and fodder, and anonymously offered suggestions to reverse the war situation, but her identity was discovered by political enemies; the prince was involved in the whirlpool of fighting for the right to protect her, and the two went from a contractual couple to a true alliance, working together to fight against the aristocratic family and the enemy; Jiang Wan's modern life Her thinking continues to challenge ancient rules. She founded a women's technical school and promoted public health, quietly changing the trajectory of the times. When her true origin faced the crisis of exposure, her former playboy allies became the strongest shield, and the prince's final choice will determine the future of the dynasty.