As for the Primordial Spirit Seed, Lu Li had not neglected it either. He asked the Spriggan 12 under Zeref to search the entire land and help him find several more places where great life-nurturing medicines grew.
He made the rounds and absorbed all those medicines, using them to nourish the Primordial Spirit Seed. Since it was relatively easy to nourish the Spirit Seed in its early stages, and the medicines he used were at least Saint-grade, it quickly grew to the fourth stage.
Since nourishment also took time, Lu Li had yet to feed some of the medicines into the Primordial Spirit Seed. Still, he felt that before leaving the Fairy Tail World, he should be able to nourish it to the sixth stage.
That was the benefit of being a champion. Staying in this world, with the resources of the Nine Great Spaces and Spirit Void Hall, the medicinal herbs and mineral deposits alone offered countless benefits.
Lu Li happened to have several gold-devouring beasts on him. Things like the Starry Sky Ring, Primordial Spirit Seed, and Fairy Spirit Seed all needed money spent on items to nourish their growth, and that pained him greatly.
But here, he could absorb whatever he wanted without any verification, saving him far too much money.
If Black Lily had not told him that such high-energy worlds had a high coupling rate with the spaces, and that staying too long might cause a great deal of time to pass within the spaces, making him miss his rendezvous with Sōsuke, Lu Li would have wanted to linger here for a few more years.
After half a month of rest and recovery, with enough spirit medicines and unrefined minerals on hand for nourishment, Lu Li prepared to begin wrapping things up in this world.