Quick Transmigration: The Ancestor Descends to the Mortal Realm

[Strong heroine + quick transmigration + System + plot-focused, with romance as a subplot]

Nan Jin, an ancestor of the cultivation world, realized why she could not ascend after her inner demon ran rampant. She died after defeating the demon race, her body and Dao destroyed. But of the fifty paths of the Great Dao, the Heavenly Dao derives forty-nine, leaving one escape route. By chance, Nan Jin seized that sliver of hope, accidentally bonded with a System, and began traveling through different worlds. As she completed missions, she also tempered her mind and body.