The group moved quickly. Lin Haifeng himself was a Third-level professionist, and in less than ten minutes, they had crossed most of the steel city and arrived at the castle entrance.
Along the way, Wen Yu carefully observed the city's architectural style.
The style resembled that of some ancient European cities; the buildings, like iron coffins, were completely empty and abandoned inside.
According to Lin Haifeng, since the treasure land had just opened, the military had not yet dispatched a large-scale force into it.
However, it was foreseeable that once certain issues were resolved, this place would become an alternative city, combining a military garrison with a research hub.
When the group reached the front of the castle, Lin Haifeng presented something resembling an identification card.
Upon seeing it, the soldiers guarding the castle entrance immediately let them pass.
The castle interior was vast, with spacious areas divided into three main levels.
