According to Yue Hongli's introduction, the so-called Heavenly Realm is a sacred place for cultivation.
After the Empire was founded, Heavenly God Gu Yi continuously attempted to construct a very special domain, aimed to allow any Spirit Master entering this domain to enhance their comprehension tenfold, even a hundredfold.
This was originally an entirely impossible task.
Yet around the six thousandth year of the Empire, Gu Yi truly created this kind of domain; initially, it was just a small Array, within which a particle composition very similar to Spiritual Particle and an invisible and intangible airflow was nurtured.
Spirit Masters could significantly enhance their insight and speed up the automatic arrangement of the Spiritual Particle Structure within their bodies by sensing and guiding this airflow into their bodies.
Thus, Gu Yi named this airflow — Spiritual Energy.
