It is rumored that the Treasure Pavilion spans both the Immortal Realm and the Heavenly Road; or rather, the Treasure Pavilion on the Heavenly Road is merely a branch of the one in the Immortal Realm.
The two are closely connected. Whatever is needed in the Immortal Realm can be sent down to the Heavenly Road, and whatever is scarce in the Immortal Realm, the Treasure Pavilion on the Heavenly Road will send up.
Immortal Stones are sent down from the Immortal Realm. They contain the essence of that realm, capable of piercing the barrier of the Heavenly Road to return to the Martial Dao World, and allowing one to travel back again—all without the need for any other external force.
Chapter 656