Heng Mountain's Yellow Court Palace wasn't originally one of the nine major sects, nor was it any kind of treasured paradise. It was simply that there was a spring nearby at the foot of the mountain, and the scenery was decent, so a female layman, who had left home with her hair down, built a hut to meditate and seek the Dao, creating her own inheritance.
This layman was originally from the Three Constellations Immortal Gate, a scholarly and official family. In her youth, she was well-versed in the Daoist Collection and supposedly had a dream where a Kunlun Immortal enlightened her, granting her four volumes of the Heavenly Book. Since then, her appearance remained youthful, and time seemed to have no hold on her, making her deeply pursue the art of Immortals.