"This... is clearly measuring the earth's crust!" Ye Hao looked at the people Lv Dong drew and the surrounding mountain areas they went to, frowning and muttering to himself.
The people digging are spread out at around one hundred meters above sea level, naturally marked by Lv Dong for Ye Hao. With just a glance, Ye Hao understands that they are measuring the earth's crust.
And the positions of the three Mountain Guardians seem to be preventing someone from exploring the crust of their mountain...
Ye Hao thought silently, is someone planning to dig a tunnel to the mountains behind, because Zhu Yuanzhang's tomb is just within the mountains at the back, if they are digging tunnels, they must check which part of the earth is loose and doesn't have large stones.
Combining this with the fact that those people take a long time to transport a load of earth, Ye Hao thinks that at this moment, they are definitely digging into the place from below where there are no mineral resources.
