Only someone like a Core Formation Lord could lay claim to a genuine 3rd-order Spirit vein.
Aksai's Emerald Cove had a 2nd-order Spirit vein. However, since it had been created recently, it was still in its nascent stage.
The 2nd-order aura it emitted was not stable, and one needed the help of a Yantra to create an ideal environment for Spirit cultivation. Even then, it was not at its ideal peak.
Although Emerald Cove was still a lot better than ordinary land, it was not the best choice for Foundation Building cultivators.
Even someone like Aksai, who was in the Spirit Refining Perfection stage, would not stay in a land with a nascent 2nd-order Spirit vein and decide to have their breakthrough there. This was because they needed a stable Spirit vein to increase their chances of breaking through to the 2nd Spirit cultivation realm.
