One-sentence summary: The twins of immortals and demons, who are connected by fate, are forced to work together to repair the collapsed world, and finally discover that they themselves are the last piece of "Jue" to mend the sky.
On the day when the ancient artifact [Kongtong Jue] collapsed, a born demon fetus and I were bound by a mysterious [Tian Dao Prompt], and we became [half bodies] that repel the pure and the turbid, and share the same fate of life and death.
I, Zhang Heming, a disciple of the Immortal Sect, was ordered to go down the mountain to save the world in danger. He, Huangfu Jian, is the most ferocious demon child in the world, and is my "other half" appointed by Heaven.
From then on, the journey of inquiry became a life-and-death practice that was urged by the "system". Every time a dragon vein is repaired, a layer of ancient true meaning is unlocked: [Thick soil carries things, a clear mind can see the nature] [Solid gold sharpens the edge, the devil's heart is initially determined] [Green trees come in spring, enlightenment is endless]... The fairy light and the devil are forced to blend at the moment of life and death, and their cultivation is refined in desperate situations.
Along the way, the dragon princess burned her soul for us, the Yaochi fairy resurrected her past life to protect the Tao, and a mysterious painter wrote a pen to record this journey of defying heaven and changing fate in ancient history. However, at the end of all catastrophes, stands the Yuanji Taoist Temple, which believes in "All Dharma Returns to Nothingness". They regard friendship and struggle as suffering, and want to bring this troubled world to zero with one click.
When the final [Heavenly Prompt] emerges, we are faced with a choice more cruel than life and death: Should we let this pure and turbid power be annihilated in the confrontation and let the world restart? Or should we go back to the beginning of time and recast ourselves, the "half body" polished in the catastrophe, into a "human weapon" that surpasses the ancient artifacts, so that we can combine the body with the Tao and rule the world forever?
Asking about the calamity, he ended up with his body as Jue.