Is the Concubine-Born Substitute Bride Really That Weak? The Ugly Princess Is a Master of Medicine and Poison

[Transmigration + face-slapping + punishing scumbags + two strong leads + devoted couple]

After dying, her soul transmigrates into the body of a concubine-born daughter of a marquis's household. Luo Qingqing becomes the ugly wife of the sickly Fourth Prince. Equally skilled in medicine and poison, and fiercely ambitious in her career, she has no interest in romance after the wedding and only wants to make money. She even tries every possible way to get a divorce so she can be free. Unexpectedly, a hint from the Valley Master of the Medicine God Valley leads her to uncover a shocking secret...