A merchant lady reincarnates as a Qin prince. Her goal shifts from finding a good husband to annexing and "marrying" the finest women across the realm. Notes: 1. Early chapters: female-to-male transformation, later returns to female. 2. Later both women will disguise as men. 3. Alternate parallel world. 4. First full-length original of this author, titled "I Become Qin King" at first. This is an open-world fantasy. Blurb: When Princess Wen Jiang arrives in a carriage, everyone says she is the most beautiful in all the world, comparable to the goddess of the Luo River. Zhao Bian, looking out, thinks this elder sister is beautiful too but doomed by arranged marriage. As she is still lost in thought, she meets the Princess’s eyes. The princess points: "Make her my military companion." The king says, "She is a woman." But she is the first beauty, the most favored princess of Huawa Dynasty, and she calmly says only two words: "Fine." For those two words, Zhao Bian leaves home and rides south to follow her for ten years. At the martial contest, a teenage Zhao Bian does not understand prudence; because of one glance from Wen Jiang she insists on proof and gets her shoulder bone shattered by a single strike, bedridden. Her mother complains she was too eager; once she wakes, the princess never visits, and urges her to return home. Zhao Bian refuses. Until the princess lifts her face, looks at her, kisses her, and tears form in her eyes: "You are truly foolish." The realization arrives: she was only a piece on a political board. Later they still come together: they test each other, hurt each other, then endure palace collapse, escape, near-death moments, sleepless nights. In the exhaustion between breaths, Wen Jiang lifts her face and stares. Zhao Bian understands this gaze is no longer calculation. From teenage rivalry to shared destiny, maybe a true alliance. CP notes: A younger genius inventor eventually becomes a war god male lead, while older scheming beauty becomes queen receive.