Rebirth of Revenge: Cooperating with the Enemy's Crown Prince

When I woke up in the Hou Mansion, I found myself reborn. In my previous life and at the hairpin banquet, my father handed my birth date to the third prince. "This woman has a valuable destiny. She can help His Highness ascend the throne. If that fails, she can also die for His Highness to prevent disaster." Later, I actually blocked the fatal poisonous arrow for the third prince, but before I died, I heard my concubine's sweet smile: "Sister, you are so stupid. My father knew you were a sacrifice and even prepared the coffin." When I was reborn and returned to the night before the Hairpin Banquet, I stroked the cold golden hairpin under my pillow. There was a knock on the window lattice, and the prince who poisoned me in my previous life climbed through the window and entered: "Will you cooperate?" I smiled and put the tip of the hairpin against his Adam's apple: "What do you want in exchange for it?"