This novel was called "My Imperial Concubine Is Going Against the Heavens". It had elements of a strong woman, fantasy, and a different world. The female protagonist was Xia Qingge. After she transmigrated, she had the Phoenix Space and was the young master of the top palace gate of the continent, Yuxia Palace. The male protagonist was Gong Baiyi, the prince of the Phoenix Clan. I hope you like this fairy's recommendation. Muah ~π