Qin Yi skimmed the table of contents, picked a few intriguing chapters, and tried reading. But his mind refused to focus.

Quantum mechanics was too vast—he couldn’t find what he needed.

The bookworm let out a long sigh.

He slid the book back onto the shelf.

*So I really need a professional after all?*

Qin Yi shook his head helplessly, scrolled to the first contact under "L" in his phone, and dialed.

While waiting for the call to connect, he gently tucked the blanket around Kitten Girl, grabbed two fishy-smelling fish, and slipped back onto the tiny rooftop.

"Hello?"

A man’s voice answered—sounded about thirty.

"Jianwen-ge, it’s Qin Yi."

"Rare sight! Qin Yi actually calling me first? A day for the history books!" Li Jianwen peeled off his Level-1 rubber gloves and shut the isolation room door behind him.

"Are you… free right now?" Qin Yi frowned at the muffled beeps and chatter from the other end.

"Spill it. Just finished a consultation surgery at the district hospital." Li Jianwen wedged the phone between his shoulder and ear, pressed the alcohol sanitizer dispenser, and scrubbed his hands.

Qin Yi paused, carefully rewording Lin Jin’s story into a hypothetical case before dumping the whole thing on Li Jianwen.

Li Jianwen had been sitting on an observation bench outside the OR, but after ten minutes of passing staff bowing—"Good day, Professor Li!"—he ditched his isolation gown and ducked into a restroom in the locker room.

"So… Jianwen-ge, what’s your take?"

"Hmm…" Li Jianwen rubbed his chin, intrigued. "Interesting story. Which angle do you want—quantum physics or physiology?"

"Both."

"Alright, I’ll share my two cents. Ever heard of quantum entanglement?"

"Vaguely…" Qin Yi frowned, trying to recall the odd term.

"It emerged in the 1930s. Imagine two particles born together, flying apart in opposite directions. Before observation, per the Copenhagen interpretation, each exists in a ‘superposition’—like a piano chord, a blend of multiple notes. But measure one particle? The system’s conservation law kicks in. You instantly know its partner’s complementary state—even if it’s light-years away. Pop culture calls it ‘spooky action’ or ‘teleportation.’ Physicists call it ‘non-locality.’"