The novel I recommend to you is A Different Crown Princess. In her previous life, the female protagonist was the concubine of the male protagonist's father. In this life, she traveled to ancient times and became the concubine of the Crown Prince. The male protagonist was the respected Crown Prince of Tianli Kingdom. He had a certain amount of power and resourcefulness, but he did not like the female protagonist. The female protagonist wanted freedom and love. The story between the two began. I hope you like this novel ~