C115 Refining True Spirit Marrow

"The forge's temperature is too low and difficult to manage, not to mention it's just ordinary charcoal, riddled with impurities..."

"I'm hesitant to strike the chopping block too hard. If I do, I might just break through it and the floor beneath..."

Xiang Yongming rattled off several shortcomings in quick succession, glancing at Su Ze with a blush creeping onto his face.

As a subordinate