Chapter 347: The Entire Civilization Steps into the Era of Collecting Minerals!

Facing these gear relics, human craftsmen had studied them for half a day without success and could only consult more knowledgeable Rat Artisans.

Sure enough, the complex legacy of the "Great Gear Treasure" was still in Lu Yuan's mind, and these gears weren't such a big secret.

Several Rat Artisans came to the large conference room, marveling at these objects, studying them back and forth.

"It seems there's a bit of memory..."

"I've encountered them in the past, but I can't recall now."

Shu Gongye stroked his nose-bridge where the microscope glasses sat and pondered for a long while before sighing, "The craftsmanship of Gear Civilization... indeed lives up to its reputation!"

"I've heard of this technique, it's called Divine Thought Engraving. Every person has an Extraordinary Spark, right? This thing is made with Fire Spark Engraving."

"Under normal circumstances, using various crafting skills to engrave engravings to millimeter precision is the limit for most craftsmen."