Back to Prehistory as a Caveman

“Since the ruins of Chazhen were accidentally discovered last year, they have drawn worldwide attention.”

“Recently, the discovery of a large number of finely crafted stone and pottery artifacts has once again sparked heated debate among internet users around the globe.”

“Among them, the most talked-about is this metal file, so far ahead of its time that it seems to have transmigrated from the modern era.”

“The material, craftsmanship, and design of this file are almost identical to those of modern files. Yet experts have confirmed that it really is an artifact from more than ten thousand years ago...”

Zhang Tian stared at the file in the picture, his pupils trembling with shock. What the hell! Isn't that the file from my house?