While Huo Yuhao and Wang Dong were talking, two more precious lots were sold in the auction hall.
One was a whole chunk of the precious rare metal crimson flame demon gold, weighing roughly fifty jin. This rare metal had an exceptional resistance to high temperatures, along with outstanding ductility and flexibility, making it ideal for components in soul tools that needed to operate at full power for extended periods. Even in the Sun Moon Empire, it was a strictly controlled resource.
The starting bid for this chunk of crimson flame demon gold was outrageously high, exceeding a million Gold Soul Coins, while its final sale price was astronomical.
The other lot was a precious soul tool blueprint developed by a Level 7 Soul Engineer. Its price could even rival that of the Golden Radiance Left Arm Bone from earlier. That was because the blueprint was not merely labeled as a Level 7 Soul Engineer's design. It explicitly stated that it was a blueprint for a Level 7 Soul Tool personally developed by a Level 7 Soul Engineer.
Every soul engineer's research had a different focus, and anyone who reached Level 6 or higher was bound to have something unique about them.
The higher a soul tool's level, the more it reflected its soul engineer's individual characteristics, and the harder it was to design and manufacture. To give a simple example, a soul tool developed by a Level 9 Soul Engineer was akin to a strategic weapon for any nation. Even the Level 9 Soul Engineer who developed it might be unable to power it.
One major reason soul engineers still held a lower standing than soul masters across the continent was that there were too few high-level soul tools. Level 7 was precisely the threshold for becoming a high-level