Please recommend a romance novel where the male protagonist is cold and powerful, the female protagonist is equally powerful but has a cold personality, and the male protagonist dotes on the female protagonist.

I recommend Prince Leng as a Concubine to you. It's an ancient romance novel. The male protagonist was Cang Chenxuan, the Crown Prince of the Cang Kingdom. He was cold and emotionless, and his mood was unpredictable. The female protagonist was a rare woman with a strong aura and excellent cooking skills. At first, she was unlucky enough to become a female supporting character waiting for the male lead to have a good time at any time. However, as the plot developed, she successfully transformed into the male lead's concubine. The male protagonist doted on the female protagonist very much. In front of her, he was a soft little sheep and always devoted to her. I hope you will like this novel.