The Little Physician of the Prince's Household Is Spoiled Rotten

[One-on-one sweet romance + transmigrated heroine + reborn hero + medical arts and a spatial realm] Liu Shengsheng transmigrates into the body of the future Princess Consort of Prince Rong, a frail man with disabled legs. By a twist of fate, she also enters into a contract with a black-clad intruder who sneaks into her bedroom. She bumps her forehead, and the intruder’s forehead gets injured too. If she says east, the contract prevents him from going west. Liu Shengsheng gets curious and even considers putting a cuckold’s hat on Prince Rong. But on their wedding night, Prince Rong, who was supposed to have disabled legs, actually stands up! It turns out the black-clad intruder is Prince Rong himself!--Wen Rong is reborn and vows to protect the woman he loves. But the Shengsheng of this life is completely different from the Shengsheng of his previous life. Wasn’t she supposed to be a quiet, elegant legitimate daughter? Why is Shengsheng so lively? Wasn’t she too weak to lift a finger? Why is she so strong? Wen Rong suspects someone has switched his Shengsheng with another person! But after all their twists and turns, he finally realizes that his Shengsheng has never changed.