Daily Sign-In, Invincible Countdown

The rr virus came, and Blue Star's city was occupied by countless monsters overnight. Ling Aotian's soul traveled to this point and obtained the sign-in upgrade system from all heavens. Ling Aotian: System, I have reached the starry sky level, can you let me go back? System: Host, you have not completed the task I issued. You can only go back after completing it. Ten thousand years later. Ling Aotian: I am invincible in the system, can I go back? System: The mission has been completed, and the transmission is in progress. Warning? Warning?, Attacked by unknown energy. This transmission ends here. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.