The Prince's Revenge Bride

On my wedding night, the hall of celebration becomes a hall of mourning! My husband fakes his death to be with his brother's wife, yet forces me to be a Dual-lineage Wife to his younger brother. The Crown Prince of The Eastern Palace crashes the mourning hall, offering: 'Marry me, and I will help you get your revenge!' I transform into the Crown Princess. Seven days later, the Dual-lineage Banquet becomes their grave! The Prince hands me the knife as I punish the villains.