As Zhao Yi contemplated his next step, Xu Yue'Er returned, pushing a giant black water sphere.
Zhao Yi glanced at the water sphere, first stunned, and then couldn't help but raise an eyebrow.
It was the first time he realized that the Cultivation World also had oil.
But it was understandable.
According to the textbook from Zhao Yi's previous life, oil originates from crustal movements, leading to trees and animals being buried underground, gradually forming over millions of years.
The Cultivation World might lack other things, but it was full of trees and wildlife worldwide.
These elements are the basic material conditions for forming oil.
However.
What puzzled Zhao Yi was, how did Xu Yue'Er find this oil?
Could it be that the Dragon Race also has potential as geologists?
Looking at the oil water sphere, Zhao Yi asked Xu Yue'Er, "How did you find this stuff?"
