Apocalypse Rebirth: Time Anchor

In the future, nuclear war erupts, AI rules the wasteland, and humanity is on the brink of extinction. Lu Jin, a wasteland warrior, travels back to modern times with a time anchor system. His mission: protect Wen Yu, the mother of the future human leader. The Zero Seven mechanical entity has infiltrated reality, disguised as a human, and is hunting her step by step. Time freezes for three seconds, usable only three times a day. With his mortal body, he confronts a killing game that spans time and space. Wen Yu carries an ancient bloodline; she is both hope and a target. In their flight, they stand together; in adversity, they fall in love. He fights to the death for her, and she carries the future for him. When the time anchor tears fate apart, all that is predetermined becomes variable. In this life, he no longer lives for a mission, but only to protect her until the very end. — Description from novelcodex.org