The day Shen Yuan regained her sight, the first thing she saw was her fiancé kissing her older sister. After slapping the cheating scumbag and his shameless lover several times, she immediately agrees to marry in her runaway sister's place, taking the hand of the notoriously sinister and ruthless Prince of Zhennan, who is said to be gravely ill. Everyone says she'll be a widow in all but name.
But on their wedding night, the man grips her slender waist and pins her against the window. "I hear you think I'm no good in bed?"
Shen Yuan calmly takes his pulse. "The poison has reached your bones. You're right, you're not doing too well. I can save you, but I have conditions."
She trades her medical skills for the prince's protection, investigates the truth behind her mother's murder and the wrongful destruction of the Zhao family, and gradually uncovers the shocking secret of the Second Prince's rebellion. The prince, rumored to be a violent tyrant, lets down every guard around her and becomes possessive and clingy, willing to take on the whole world for her.
At a banquet later on, her ex-fiancé comes back, red-eyed and begging to get back together. The prince takes her hand in front of everyone. "Do you really think you're allowed to covet my princess consort?"
Everyone said she'd married a dying man, but she still managed to make the unhinged prince fall so hard that he can't live without her.
I like the calmness of the main heroine. It's great to watch it.