I am favored by the tyrant, so what if I am vicious?

With a pure and beautiful figure, she was stunningly beautiful... That year, she was ordered to enter the palace to accompany her elder sister who was pregnant with the heir to the throne, but she didn't expect to be imprisoned and become the fish to be slaughtered on the chopping board of her elder sister. She was forced to bear a child by surrogacy, chained... Her beautiful bones were made into bone fans for her to play with day and night. Her limbs were chopped off, and she became a human pig that was neither human nor ghost, unable to live or die! Once reborn, she went back to 20 years ago! Good people don't live long, and evil will last for thousands of years. In this life... She wants to be a demon concubine who brings disaster to the country and the people, to live a hundred years, and to take away her elder sister's position as queen and queen mother! She also wants to climb on the emperor's shoulders, overlooking the mountains and rivers of the world, and become the...