Special Forces: I've Been Quietly Signing In for Ten Years, and Now I'm Invincible

Su Chen transmigrated to a special forces world with a sign-in System.

All he had to do was sign in at different locations to receive different rewards.

He signed in at the military compound and gained basic hand-to-hand combat mastery.

He signed in at the execution ground and gained mastery of the Jungle Ghost.

He signed in at a field training base and gained basic sniper mastery.

As he continued to sign in, Su Chen secretly intervened several times to complete System missions.

Fan Tiankeng: "Good. That Shadow helped us make another successful decapitation strike."

Wen Shenkeng: "Old Fan, still haven't figured out who that Shadow is?"

After secretly intervening time and again, Su Chen drew the attention of many high-ranking military officers, but they searched in vain.

Until that year, when Su Chen enlisted in the army...

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.