Celestial Tome‘s Awakening

Chen Ye wakes up in a mysterious military barracks, only to realize he's been thrust into a world modeled after a familiar yet altered version of 1965.
Tasked with surviving life-threatening challenges in this world, he quickly discovers he’s the sole Reincarnate, with memories of his past military service aiding him in this new reality.
As he navigates the perils of a rugged cross-country trek and begins mastering new skills, he starts to unravel the true nature of this world.
Can Chen Ye ever escape and returns to his original world, or is he destined to be trapped  forever?