Five-Dimensional Salvation

Fifty-year-old astronomer Chen Yan was thrown back seventy years ago to 2070 at the last moment when the black hole swallowed the earth, and became a twenty-year-old graduate student. He brings with him all the knowledge of the future and a fifth-dimensional secret that can peek into the timeline. But he knows that saving the world cannot rely on conjuring technology out of thin air. He must be like a phantom prophet who, with one tweak, one formula, one hint, guides an entire era down an unimagined path.