What If?
In the end, the Phoenix Ancestor gave up her Nine-Leaf Nirvana Herb to Yang Lujia who was a tyrant that kept pestering her before. Shockingly, one of the wings of her human form was cut off her body. As ruthless as it sounded, she actually did not mind. What really weakened her the most was the Nine-Leaf Nirvana Herb.
However, although the Nine-Leaf Nirvana Herb was important for her to keep herself at her peak state, it wasn't as important as the plan to be enacted sooner.
A Nine-Leaf Nirvana Herb comes from within her very soul connected to her dantian, her source of power. After achieving the peak of the Saint Emperor Realm, she will be able to produce a Nine-Leaf Nirvana Herb. Since it had been a long time since she had produced this Nine-Leaf Nirvana Herb, unlike any other phoenixes, hers was the most potent of them all.