Lin Yi, a former programmer in Hangzhou, died from overwork and was reborn as a baby in Britain.
At six, he discovered that the Daily Prophet at the newsstand by the road could move. Well, then: the Harry Potter world. The good news: he and Harry became best friends at primary school. The bad news: no Hogwarts acceptance letter came on his eleventh birthday.
He was a Muggle.
That night, a letter wreathed in silver-blue flames flew in through the window and burned to ash. A voice rang in his mind: "Technology-Side Awakening Guidance System, Basic Access, ID LS-0001. Welcome back."
Wait, what do you mean, "back"?
The System was frank: I can't tell you. And you don't necessarily have to go to Hogwarts to learn magic.
And so Lin Yi began his magical daily life: asking Harry to bring back samples of magical materials from Diagon Alley, using the System to analyze the energy structure of dragon's bloodstone, studying the strange life signals in unicorn horn powder while attending Muggle primary school, being watched by the Ministry of Magic's surveillance owls, and receiving an unidentified silvery-white substance left by a mysterious late-night visitor. When activated with two batteries, it revealed markings as intricate as a circuit board.
Nobody taught him magic, but he had a whole scientific methodology at his disposal.
While Harry learned the Summoning Charm at Hogwarts, Lin Yi studied whether an electromagnetic field could interfere with magical structures. While Voldemort plotted his return, Lin Yi wondered: If magic was essentially a quantifiable form of energy, could "science" be another kind of magic?
This is the story of a Muggle boy using a System, common sense, and a bit of simple, practical Chinese ingenuity to navigate the cracks of the wizarding world.
And occasionally, to save a friend along the way.
Theme: Conducting research in the magical world with a technology-side System