"Master, I've only ever heard of the Primordial Spirit being able to traverse the void; there is no other way."
The divine system is extremely mysterious, and with the number of divine officials being very few, the methods by which heavenly soldiers and generals cross the void have become a secret unknown to ordinary people. The immortal system belongs to the public system, and Ashan spoke of its most common method.
However, an immortal's Primordial Spirit can only realistically be cultivated upon reaching the sixth-grade immortal stage. The Primordial Spirit is an advanced form of the Divine Soul, and obtaining the Primordial Spirit is equivalent to acquiring immortal fire. In fact, immortal fire is the most crucial element in crossing the void.
Chapter 1827