Rebirth of a Concubine

A fire burns away the past. When she woke up from the dream, she was reborn in the next life, and she was no longer her. Who is she? It's Zheng Chunxin, the second daughter of the Zheng family in Liyang City of the Great Zhou Kingdom. She was also Queen Huiyuan, who was consecrated by Emperor Zhu Heng of the Great Qi Kingdom. Or is it the seventh prince of the Daduan Kingdom who disguised himself as a man for more than ten years and won the throne in one fell swoop?