Craftsman, a branch of Scholar, has naturally inherited the Scholar's "nobleness."
"This is a logistics profession in the Knowledge Series, and there can never be an all-powerful craftsman, just one branch is enough to consume a lifetime."
The professional skill of a craftsman is only one, or rather, countless.
"Based on 'Knowledge,' the entirety of a craftsman is to manufacture or modify."
This is actually also a branch of Scholar, embodying the specialization of its "output/Writing (Contamination)."
There are far too many categories of craftsmen, just to list a few, there are "Swordsmith," "Mechanic," "Armor maker," "Position constructor," "Shipbuilder"..... any one branch can consume a person's entire life.
But fundamentally, it is a profession that transforms 'reality' based on 'Knowledge.'
"Knowledge, I have that… it's just not very useful."
Lu Ping'an's "Taboo Knowledge" was too "versatile" and thus lacked anything particularly capable.