Professionals, identified by their professions, refer to their role in real combat; on some level, however, it also hints at their societal status.
Drivers drive, Painters paint, no matter the profession, in truth, they are beneficial to the whole "society"... constantly creating "value".
There were professions that demanded upstream services, and those that extended downstream, with products and demands linking them all together to form what is called the social order...
"The world I lived in before, despite one being more energetic than the next, lacked the 'social order' I needed...."
Only when a further step of "inspiration" was finally triggered did Lu Ping'an realize what he was missing.
He was an inheritor, having established the core "rules" from the start—"Life Trading".
This wasn't just about "Life" and "Trading" as two separate concepts, but their combination, and Life pervaded the Multi-universe, but the premise of "Trading" was "Communication" and even "Peace".