Chương 221: The City's Defense Battle

Before Angelica could familiarize herself with the operating system of the mech she was piloting, she suddenly heard a loud noise coming from the sky above the city.

Looking up, Angelica saw a shocking scene.

A huge crack suddenly appeared on the ceiling of the city!

Afterward, an extremely huge drill bit fell from the top while spinning rapidly.

Angelica had already learned about the machines during the meeting with the spaceship captains. She also knew that the machines were digging a path through Zion.

Now, it seemed that the huge drill that appeared on the ceiling was a machine specially made for digging tunnels.

[Damn! Zion should be buried at least a few kilometers underground, but this drill machine can directly dig through the surface?! Isn't it too fast?!]

[I thought it would take the machines at least 10 days to half a month to arrive. How did they arrive so quickly today?]