Crazy Concubine's Poisonous Hand

She is the witch that everyone shouts to beat; he is the decisive murderous Prince of War. She was originally a demon king from another world, but once she traveled through time, she became the good-for-nothing legitimate daughter of the Prime Minister's Mansion. Her father did not care for her and her aunt did not love her, and the concubine bullied her everywhere; he was the god of death on the battlefield, and his legs were poisoned by someone's scheme. A marriage contract connects two strangers together. Is it a coincidence or a plan? Are their identities really limited to this? (Non-serious copy: This article tells the story of the heroine leading two supporting female characters all the way to the top. The hero is just the assist in the whole story. If you don't believe it, you can read it. The thoughts of everyone in the palace changed. First it was "This woman is not good enough for my prince", then "It seems that this woman is also good", then "The prince and the princess are a match made in heaven", then "I always feel that the prince is not worthy of the princess", and finally "Princess, can you divorce the prince?")