Beautiful!

As Gu Qing Shan approached closer, a cold, mechanical voice resounded from within the metal gates:

[Detected target, identified as human]

[Access granted]

The gates gave off a loud noise.

------it was opening by itself.

Looking through the gates, Gu Qing Shan could see that these gates could only be considered a small entryway, as there was an entire destroyed world behind the gates.

Ruins.

Ruins as far as his eyes could see.

This underground world could be estimated to be around several million square meters in total, judging by its structural layout and concentration, anyone could imagine how prosperous this world used to be.

-----unfortunately, there were no longer any living beings here.