After I Was Erased from Existence, She Gave Birth to My Posthumous Child

I am about to marry Princess Jialuo. She is revered by all under heaven and the most cherished jewel of King Qi. I come from a vassal state of the Qi Kingdom, a lowly hostage prince. I deliberately got close to her, intending to use her as a stepping stone to power. But I never expected that I would ultimately fall into the abyss for her. The System warned me: “Complete your revenge mission as soon as possible, or you will be erased.”