Gathering spiritual energy was secondary, the main thing was that with the barrier of the Nine States, the one-tenth of Chaos primordial energy that scattered into the void would not dissipate outward but would remain within the Nine States.
Keeping that one-tenth of Chaos primordial energy within the Nine States was Jiang Chen's main objective.
This spiritual energy was like water, always flowing to lower areas; without a formation to seal it off, the spiritual energy would flow from areas of abundance to those where it was sparse.
This is what the Dao De Jing says, "The way of Heaven is to take from the surplus and supplement the insufficient."
"Damn it, it's the Nine States barrier!"
"The Nine States barrier disappeared for tens of thousands of years, why has it suddenly reappeared now?"