Back to 1965: The Great Detective’s Mission to Protect the Nation

1965: an era of burning passion, and a world of martial intrigue where undercurrents churn.

Top criminal investigation expert Gu Yan is reborn by chance in an age when precision manufacturing is just getting started and enemy spy networks lie in wait. For now, he is merely an ordinary beat cop in the capital, but the “Great Nation Detective System” has awakened in his mind.

[Microscopic Vision]: No tiny hair, fingerprint, or even metal-level molecular discrepancy can escape his eyes.

[System Shop]: Complete missions and earn points to exchange them for industrial blueprints ahead of their time: magnetic levitation centrifuges, high-performance specialty steel, supercomputer logic architectures...

Starting with a “negative-tolerance washer” sabotaging production, Gu Yan turns himself into a blade and tears apart the vast web laid by the mysterious “701” organization. At the Friendship Store, his impeccable London accent and astonishing watch-repair skills slap an arrogant foreign expert in the face. At the Western Suburbs Guesthouse, he becomes “Tony Gu,” a wealthy young man returned from abroad, charming a top spy and deciphering the “Silent Spring” poisoning plot with effortless ease.

But as the investigation deepens, a top-secret file sealed away for fourteen years comes to light. His father, Gu Changfeng, presumed dead, is still alive, imprisoned deep in the Greater Khingan Mountains in the “Far North Forbidden Zone,” guarding an ultimate secret about human evolution.

For the greater good of the nation, and to learn the truth about his father, Gu Yan heads north into the frozen wilderness and steps through the gates of the abyss. With his microscopic vision, he will carve a path through the ice beneath the earth and forge a beacon of technological progress for the Republic!