Ancient Insect: Who Are You? I'm the Number One Investor in a Peak Civilization!

Near a vast Underground Fissure, countless kilometers away.

Black smoke curled through the air, and gears roared.

Hundreds of thousands of mechanical puppets worked busily, continuously carrying timber, coal, and other supplies into warehouses.

The mechanical cores of these puppets still bore traces of Source Fire Civilization technology. Naturally, the knowledge Humanity had traded to them back then had played a major role.

Ever since Green Field City began its new journey, the Underground Alliance had grown at an unprecedented pace and had now basically absorbed the technology Humanity had traded to them.

"I hereby announce that the Underground Alliance's Sky City will officially begin its maiden test flight!"

At the command, the ground began to tremble faintly. With a rumble, the city rose from the ground, slowly ascending like a hot-air balloon.

"Report to the Governor! The city's operating status is normal."

"All generator units are normal!"

"Current altitude: 300 meters... 500 meters... 1,000 meters."

"I hereby declare the maiden test flight a perfect success. Sky City will maintain an altitude of 3,000 meters for approximately one month."

The moment this order was given, tremendous cheers erupted from both the ground and the city's residents.

"We succeeded!"

The faces of these twelve races were brimming with smiles.

The bright sunlight shone upon their faces. After all these years, they had gradually grown accustomed to life on the surface.

The Underground Alliance's Little Grotto-heaven had already been moved into the surface city.

And once this test flight ended, it would mean that the Underground Alliance had gained the ability to travel with the entire city.

Now, all they lacked was a little determination—the determination to leave this fertile land and head into the distance.

"I wonder whether our human friends have found any new opportunities. It has truly been a