Go back and forge the drill accessory first.
...
Inside the train compartment.
Chen Mang took out the white-grade vehicle accessory blueprint "Drill" from the drawer and slammed it onto the control panel. When the blueprint transformed into white light dots, it consumed another 100 units of iron ore.
The next moment—
A massive drill appeared at the front of the train and could freely extend and retract.
Without any hesitation.
He used 4,400 units of iron ore at once to directly upgrade the white accessory "Drill" to Level 10.
"So cheap."
Chen Mang couldn't help but sigh. 4,400 units of iron ore was just enough to feed his batch of slaves for three days. Although it felt a bit pricey when feeding them, by the time he reached the high-grade resource mines deep underground, these slaves would explode with unbelievable production efficiency.
At that time.
The iron ore within his train would be more than he could ever use.
