I recommend "The Bloodthirsty Concubine: The Phoenix Kills The World" and "The Demon Concubine: The Black-bellied Lord, Please Let Me Go" to you. They are both ancient romance novels. The female protagonists are both black-bellied and powerful and cross-dressed as men. Among them,"Peerless Demon Concubine: Black-bellied Supreme, Please Let Me Go" also had the black-bellied elements of the male protagonist. It felt a little refreshing. These two novels are fast-paced and fast to update. You can't miss them! I hope you like my recommendation, Mwah ~๐