After I Was Wiped Out, She Gave Birth to a Posthumous Son

I am about to get married to Princess Jialuo. She is respected by everyone in the world and is King Qi's most beloved apple. And I come from a vassal state of Qi State, and I am a humble proton. I approached her deliberately, originally only treating her as a stepping stone for me to ascend to the throne. But I never thought that I would fall into the abyss for her. The system reminded me: "Please complete the revenge mission as soon as possible, otherwise you will be erased."