What is red dust immortal in “Shrouding the Heavens”?

So, first, what is red dust? Red dust means the world of mortals in Chinese.

What is red dust immortal? It is one who becomes immortal in red dust.

Red dust immortals belong to the category of true immortals.

True immortals experienced tribulations before the chaotic ancient era in which there was still immortal matter and a completely heavenly way.

Red Dust Immortals refer to the immortals who are not in the immortal realm. They achieve immortality through self-cultivation in the world of mortals. They could be stronger than the true immortals after tribulations.

Red dust immortality can be achieved through ending-dharma tribulation or an immortality-like ancient environment without tribulations.

Immortality achieved through ending-dharma tribulation is much stronger.