There were two novels related to the rebirth of the Flame Emperor. They were "The Rebirth of the Flame Emperor on the Douluo Continent" and "The Rhyme of the Flaming Scales that Break the Firmament". The former narrated the story of Xiao Yan's rebirth as the Flame Emperor after his Dou Di body was destroyed and he entered the Douluo Continent to train, while the latter narrated the story of the Flame Emperor's rise after the heavens were destroyed, with the Flame Emperor as the main character. I hope you like this fairy's recommendation. Muah ~😗