A Supporting Female Character Cultivates Immortality, Starting by Becoming the Sect Ancestor

Intro: The night before Xu Yi was to become the senior disciple of the Xuanji Sect, she had a dream. In her dream, consumed by jealousy of the new junior disciple, she committed countless wicked deeds, ultimately meeting a fate of being ground to dust. With the junior disciple's arrival imminent, she closed her eyes, gritted her teeth, and fled with all her belongings to seek refuge. Little did she know, the moment she left the sect, she fell into a secret realm and was trapped there for two hundred years. Two hundred years later, upon finally escaping the secret realm, she was stunned to discover that two millennia had passed in the outside world. Her junior disciple had already ascended, and she herself had become the Grand Ancestor of the Xuanji Sect…