The End of the Dharma Era: the Ascension of the Immortal Lord

See the words as the face, I wish you good health. This is a somewhat interesting story, covered in a bit of scientific garb, but still a fantasy drama mainly based on Eastern fantasy. The beginning of the story. In an "Apocalyptic Era" where technology has reached its end and life has been reduced to a number, number #666 devoted everything he had to experiencing a real existence. He struggled, broke the barrier, and was introduced to practice by Master Xumi from the "Tree of All Realms". He reshaped his body and became a young man, Lu Hui. He is thrown into a world on the verge of destruction. The savior [Immortal Lord] who came four thousand years ago is about to undergo a great ascension. He needs to unify the four continents and gather the faith of hundreds of millions of living beings. Lu Hui was selected as the sword bearer and must complete the unification of the world within thirty years. However, beneath the surface of bright salvation lies a suffocating truth. There are various signs that the [Immortal Lord]'s ascension ceremony actually requires the sacrifice of hundreds of millions of lives. When the blueprint to save the world may itself be a conspiracy to destroy the world, who should you believe? May the Dharma last forever!