In the area ten thousand kilometers from the defense circle of Nebula City's satellite town, there is an asteroid with a diameter of one hundred and thirty kilometers.
In this world's asteroid belt, a diameter like this makes it a relatively large celestial body.
This asteroid has a large amount of metal elements inside, with relatively high density, and its overall mass is approximately one three-thousandth of the Moon.
Lu Heng used the Xavier Matrix to assemble a probe, which flew for half a day in the asteroid belt before he found this metal-rich asteroid.
The probe scanned the asteroid, and the indicator light lit up.
Then the holographic image of the Xavier Matrix emerged, confirming that this asteroid is suitable for building a mechanical factory.
So Lu Heng landed on the asteroid and activated the seventh Star Gate.
The Star Gate opened, and a new batch of nanobots passed through it, beginning to excavate the asteroid.
