The Cold King Poisoned the Medical Concubine

She is the legitimate daughter of the Marquis of Jingyuan, but she is an ugly and useless idiot known to the world. Being thrown away like a pair of worn-out shoes by a fiancé who was heartless and unjust; In an accident, the top mercenary traveled across the world in a gorgeous way, and the foolish legitimate daughter was reborn from the ashes; As the two sides get entangled, she transforms into a proud woman who is both a doctor and a poisoner, and unexpectedly comes into contact with the perfect Prince Ning, who was granted the royal title by the late emperor. Three chance encounters and four trials led to an inexplicable marriage proposal. The noble, elegant prince with unparalleled spiritual power turned out to be a stupid and useless fiancé. The world is in an uproar! When the truth is slowly revealed, who would have known that there was actually a shocking conspiracy behind this betrothal gift...