Within the Province of the Nine Skies, far above the heavens, there exists nine galaxies of astral rivers. Each of these astral river is made up of the combination of countless constellations interwoven together. These nine galaxies can also be collectively known as the Nine Layers of Heaven.
Humans of this cultivation-oriented world advocate the importance of meditation as a method to sense the Yuan Qi of Heavens and Earth. From a young age, they would practice breathing techniques, to train the spiritual Qi in their bodies, and to increase their vitality – they would cultivate their martial techniques in order to eventually become a Martial Cultivator.
Those with exceedingly strong senses could, through mediation, sense the existences of the nine astral rivers. By absorbing the energy projected by the boundless array of stars, and after forming an innate link with any of the constellations, condense an Astral Soul, and become a revered Stellar Martial Cultivator.
But there were even stronger humans, whom after becoming a Stellar Martial Cultivator, continued to train and condense the Astral Qi absorbed from the constellations, unceasingly strengthening the toughness of their bodies, and broke away from the realm of a Stellar Martial Cultivator. They forcefully opened the astral gate within their bodies, enabling them to be able to link with even more constellations, and able to condense more types of different Astral Souls.