In this job-changing world, magic was not some illusory, intangible thing.
You could physically touch and feel magic's trajectories, patterns, and flow.
Throughout the long years, countless magic seers had succeeded one another, devoting themselves wholeheartedly to the study of magic.
By now, humanity's research into magic could be said to be extremely profound.
From elementary school to university.
Books analyzing magic had never ceased being published, and many conclusions and achievements from magical research had long since matured and gained widespread recognition.
The book Ling Zhan had mentioned, Magic Circuit Analysis and Countermeasures, happened to be a mandatory textbook for second-year high school students.
Its author was a magic seer who had passed away countless years ago.
His contributions to all modern magical research were immense.
Moreover...
The fact that high schools in every country around the world had made this book a mandatory textbook naturally demonstrated that magic seer's ability.
Within the book, that magic seer had presented its most important concepts.
"Analysis" and "Countermeasures."
He first gave people a detailed breakdown of the circuit trajectories of every type of magic, while also dividing existing magic skills into two simple major categories.
"Detached" and "non-detached."
As the names implied.
Detached magic referred to magic skills whose magical energy no longer had any connection to the caster after they had been successfully cast.
The most classic detached spell skills included Fireball, Silencer, Lightning, and so on.
Once these skills were released, they no longer had any magical feedback connection with the caster.
As for "non-detached" magic, it referred to skills whose magical energy remained connected to the caster even after being cast.
For example: a Summoner's summoned spirit contracts, a Puppeteer's thread control, a Necromancer's undead zombies, a Mechanic's mechanical constructs, and so on.
After summoning these skills of