In the Tianyuan Realm, Magic Artifacts and magic treasures, talismans and elixirs are of a higher technological standard compared to the Huai Xu Realm. Even a Spirit Awakening Cultivator can hold a Qi Refining Artifact, and it's not impossible for a Qi Refiner with substantial wealth to have a Foundation Establishment talisman as their prized possession.
Of course, this advantage disappears at the Foundation Establishment level and above.
Unless part of a prominent family, a Foundation Establishment Cultivator can at most possess a peak second-rate Artifact, never capable of having a third-rate magic treasure for protection.
So, the owner of a peak Purple Mansion magic treasure, the backer behind An Xuan, is definitely at least a True Person from a high or mid-rank 'Heavenly Furnace Dao Concealment', a major power in the Wilderness!