Xia Pingan opened his eyes and found himself in a workshop. Looking around, he saw a large number of Peacock stones and charcoal piled in the workshop's courtyard.
In the underground kiln not far away, it was hot. A group of technicians were busy smelting Peacock stones on burning charcoals. The refined copper liquid was flowing into the molds which had long been cured through the channels on the ground. Those molds were all copper mirrors.
Seeing the peacock stones and charcoal, Xia ping 'an's mind settled down. This was the fire method of refining copper, a method of metallurgy that appeared in the Shang Dynasty of China.
When he first saw the word " yang gan ", he wasn't sure what the realm Pearl was used for, because the surname " yang " existed in ancient China. No one knew if the realm Pearl was someone's name. However, when he saw the workshop here, he was sure.
