Reborn to Marry the Regent, the Whole Family Knelt Down to Beg for Forgiveness

[Marriage exchange and rebirth + two-way redemption + double cleansing + sobriety between the hostess] In my previous life, I was sent to the palace by my parents to protect my eldest sister from disasters. I conquered the emperor and became the queen along the way. But the emperor killed me with his own hands, and smiled extremely gently: "Ruo Zhu, only the dead will not betray me." It was then that I realized that the emperor was simply a pervert. The eldest sister said that she was married to King Duan, but due to King Duan's early death, she was forced to remain a widow. In the end, she was caught hanging from a beam because of her affair. My eldest sister and I were both born together, and the eldest sister actually offered to change marriages? I smiled and agreed. Marry King Duan, become a widow, and enjoy a life of wealth and honor. I am the first person in the capital to get laid! But who can tell me why King Duan didn't die? Later, the emperor also recovered his memory and wanted you to seize his wife?