C433 You Have to be Gentle

"Ten-thousand-year-old red copper hails from ancient times. Before those times, many materials used for refining were far superior to it. Yet, in today's continent, there are scarcely any materials that can rival the strength of ten-thousand-year-old red copper. Even among the hidden clans, comparable materials are few and far between," Uncle Nan, the old servant, informed.

"Uncle Nan