"Sure," Hye nodded, "leave your upgrade mission as it is for now. We are going to raise up your vices, then your chosen warriors…"
Hye started to feed crystals to a team of a hundred soulers first. This wasn't much, but he decided to let them work as his personal guards from now on.
As for the rest of the soulers and other warriors, he decided to wait until his Crystal Heart would yield crystals after a few months and a few rounds. He planted the remaining crystals directly at the Crystal Heart, supplied trees there with tons of bones, ending up to form lots of new trees.
He didn't care at this point by any bone consumption, but stuck to using only normal bones, spending tons of them to nourish these trees and make them reach top stage.
"It's a pity they are all normal crystals, tsk!" he knew they'd all yield dark gold grade crystals at the end. But if he had a way to make them produce better crystals, he'd not hesitate to do it.