Begin as a Mine Slave and Counterattack to Become an Immortal by Signing In

No CP + Dumei + Sign-in system + Slow growth + Farming for survival Yun Zhao did not expect that late at night on the seventh day of continuous overtime work, when he opened his eyes again, his eyes went dark and he saw that it was not a hospital bed, but a dark and bloody mine! His hands and feet were tied with heavy shackles, he was surrounded by cold gravel, and he was surrounded by mine slaves who were numb and waiting for death. The vicious overseer's whip could fall at any time. ——This time-travel opening is simply a hell within hell! In despair, a mechanical voice suddenly sounded in his head: Ding! The Wanjie sign-in system has been activated! Did you sign in at the "Thirteenth Mine of the Black Nightmare Mine" today? Sign in! Must sign in! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.