'As long as it becomes a Rank 9 Spirit Tree, the Greenfire Sect will be free.'
Rank 9 is something equivalent to the level of the Soul Transformation Realm, and any Rank 9 cultivation resources would have significant effects on such powerful beings.
When it comes to Spirit Trees, once they reach Rank 9, they give birth to a spirit.
So, when a Secret Realm lacks a Nature Spirit, any newly born spirit would become the Nature Spirit of that particular Secret Realm.
For the Greenfire Secret Realm, which currently lacks a Nature Spirit and was under the control of the Hall of Hundred Elixirs using some artificial means, the birth of a Nature Spirit would free their control over not only the Greenfire Realm but also the Greenfire Sect.
'For others, nurturing a Quasi-Rank 9 Spirit Tree into a Rank 9 Spirit Tree is difficult; however, for me, it is a piece of cake.'
