At the beginning, there were only nine Lifebound Flying Swords, but over the years, Ji Yuan refined all the Purple Sky Stones he accumulated into Child Swords.
One Mother Sword, carrying eight Child Swords, together making nine swords.
Ji Yuan could refine four a year, and now, after several years, he has refined thirty-two.
The Lightning Tribulation starts, followed by Canglan, and then Blood Kill.
These three sets of Sword Arrays have already taken shape... just not fully controllable.
In some ways, it's the same with the Mountain of Mind and Heart, Ji Yuan has acquired Void Nether Stones, but he can't accommodate the buildings, not even accommodating the Spirit Field.
In some sense, he indeed lacks in cultivation.
But it's not that Ji Yuan isn't diligent; it's just that the aptitude of his Spirit Root is somewhat lacking... so it's normal for them to despise me.
