If you want to see progress, you have to put in the work, this was the law of life.
Draco was currently doing so with full seriousness, focusing mostly on his conversion efficiency. The previous few times he had entered such seclusions to work on refinement, he mostly focused on either breaking through his current stage or accumulating knowledge of various materials.
This helped him now since his energy conversion efficiency was split into two pathways, Overall and Specific.
Overall in this case referred to his average conversion efficiency regardless of the item being changed while the Specific focused on his efficiency between two specific items.
For example, if Draco continued singlemindedly practicing by changing the dirt on this barren planet to iron, his Specific Efficiency might reach 99%but his overall might only be 88%. He would be incredibly efficient when changing dirt to iron, but if he was given a leaf to change into water, he would have far less efficiency.