"Similarly, our losses were also extremely heavy. It could be described as a vendetta as deep as the sea, but according to the demands of the Book of Heaven, they still came before us, claiming it was for the sake of human cooperation," said the Different Pupil. "At that time, I was still a Profound Level Transcendent, and I heard the Supreme King scoff that the Book of Heaven had chosen him."
Wasn't that the chosen one? In a world without the Evolution Game, the Supreme King possessed one of the top talents and strengths.
Furthermore, the Book of Heaven had abandoned the chess pieces of the Tianyan Association. They were offered up like sacrifices to the Supreme King, allowing him to obtain the Book of Heaven.