"Cultivation methods in this world came in countless varieties. Immortal cultivation usually centered on golden elixir and qi refinement, but there were also visualization, guarding the one, guiding and stretching, bedchamber arts, treasuring essence, consuming qi, circulating qi, and more. The core of the Scripture of the Yellow Court was visualization. Therefore, this newly created method should take calming the mind and stilling thoughts as its foundation, supplemented by some simple body-tempering techniques..."
"After entering stillness came the light of the heart. Though this light differed from the heart-light of the Buddhist schools, it was also one of the foundations of all divine abilities in the new method. When the heart-light shone through all things, wisdom descended, observation met no obstruction, and one could control oneself—whether gathering dharma power or beginning fetal breathing..."
"Fetal breathing was internal breathing. One changed from breathing through the mouth and nose to breathing within the body, blending inner and outer into one. Gradually, acquired breathing ceased and innate breathing opened, allowing one to draw in the primordial qi of heaven and earth, nourish the entire body, and strengthen the internal organs, sinews, and bones."
"Finally, the heart-light shone through the fleshly body, and light arose within. As stillness deepened, body and mind became empty and tranquil, with no distinction between inside and outside, allowing one to see the internal organs. Continue cultivating, and the light would grow ever clearer; the illusory scene would become real, allowing one to observe the meridians, internal organs, and acupoints throughout the body. This was inner illumination."
Having already entered the late Human Immortal Realm and approached consummation, Yu Chen, who had repeatedly deduced Human Immortal Realm cultivation methods countless times, quickly erected the framework for the new technique.
Though this new method emphasized spiritual visualization, its core principle