Within the Red Refining Banner.
Under the dark red sky, the "light" carrying cosmic energy is far more immense than in the human realm.
Hence, during internal cultivation, the efficiency of converting cosmic energy into Qi Blood for absorption is remarkably strong.
"Light" is imperceptible to the naked eye; it can only be observed when reflected into the eyes, much like how vitality is formless, intangible, colorless, and tasteless, and similarly undetectable.
For a simple example, if you enter the Red Refining Banner with a flashlight on, illuminating at the same time reflects the "light" existing within the banner into your eyes, allowing it to be discovered and seen.
The "amount" of cosmic energy carried by the light does not increase or decrease based on visual perception, but is measured by its own energy and frequency sum.
This is recorded in the Dragon Realm as the - [First Law of Cosmic Energy].
As for why these cosmic energies carried by light convert into Qi Blood?
