The Lin Family, Qiao Family, Gong Family, Luoshen Sect, and various other factions are not without immortal pills, nor are they incapable of alchemy.
However, the immortal pill heritage of these factions cannot naturally compare to the Infinite Immortal Palace. There are many immortal pills they have never even heard of, yet they possess miraculous effects.
Pills that can aid breakthroughs from the Earth Immortal Realm to the Heavenly Immortal Realm, from the Heavenly Immortal Realm to the True Immortal Realm, and even from the True Immortal Realm to the Profound Immortal Realm — Su Yu has them all.
Su Yu's subjugation of the Lin Family, Qiao Family, and other forces from the Yinyue Immortal Mansion is not merely to cope with the antagonism of the Hundred River Immortal Domain's water vein demon clan, but to transform them into his own foundational strength.
He sees this place as his foundational base in the Immortal World.
Naturally.
