Transmigrated to a Chaotic Age, I Had to Cultivate Immortality to Survive

[No System + slow burn + gender swap]

After transmigrating to the crumbling Great Zhou Dynasty, where the people lived in misery and warfare raged without end, Lu Nanhua discovered that she was actually a woman. Preparing to flee for her own safety, she happened to meet an immortal from the Upper Realm. Forced into it by him, she had no choice but to cultivate immortality. As she did, the secrets of Lu Nanhua's own identity grew ever more mysterious. In this strange world on the verge of collapse, how could she save everyone while living in a woman's body?

(If you don't enjoy slow-burn stories where a man turns into a woman, this one may not be for you! This is a female-led story with a harem. The heroine only takes wives; she never marries. She's focused on her career, so enjoy!)