บท 370: Chapter 273: Slaughter in the City!_2

So, when the Spectral Dragon army charged toward the city's defense force, Lao Xu wanted to immediately locate the fulcrum of the protective barrier and destroy it first. Otherwise, if something went wrong, they wouldn't even be able to escape.

"This is easy, master, hold tight."

Dailisi gently fluttered her wings, flying close to the ground directly through the city, swiftly weaving between the high-rise buildings.

Seated atop the Black Dragon's head, Lord Zi's Spirit spread out, continuously acquiring detailed terrain maps and marking various resource spots, preparing to extract them one by one after conquering the city.

As they flew over half the city district, they finally saw a three-story building hidden underground.

This hidden underground building was rather normal for the first two floors, but the third floor delved a hundred meters into the ground, leading to a vast underground space.