Shang Hong returned to Erlianhaote two hours later.
The straight-line distance from the Aoyutuolegai Mine to Erlianhaote was less than 200 miles; given Shang Hong's heavenly level cultivation, he could make the round trip in about a shichen.
The extra hour, Shang Hong spent searching for copper ore veins.
Returning to Li Xuan's side, Shang Hong's face was somber, and he held several colorful pieces of copper ore in his hand.
"I randomly searched seven locations, each more than ten miles apart from the others. Eventually, I dug up copper in four places. The shallowest one was less than twenty meters from the surface and could be mined openly."
The turbulence in Shang Hong's eyes still could not be calmed.
Even from his preliminary inspection, it was clear that the scale of this copper mine was terrifying, deserving to be called the best in the universe!