C364 I Opened It and Closed It

After a brief wait, Jinbao's voice echoed in my mind. "Boss, the creator of the Engraving Array is a true master. These stone doors stand six meters tall and are three meters thick."

"And they're not just any rock—they're formed from millennia of intense heat at the mouth of an underground volcano, tougher than refined steel."

"Such material could be used to craft an imperial weapon