After the Marriage Change, I Became the Emperor's Uncle's Bai Yueguang

A modern martial arts champion, dressed as a merchant girl for a bride. Does the lame husband have white moonlight in his heart? It just so happened that all she had in mind was revenge. Let the enemy's old wounds relapse and die on the battlefield. Help the prince win the heir, fight in the harem, and wait until he wants to make her the queen—— She just wants one thing. Free.