A few days later, Chen Huan found Chu Xin with a new Heart Energy amplification device and handed it to him.
"Here, this is the equipment you've been pestering me for. Haven't you wanted it all this time? It's yours."
Chu Xin looked at the iron ring in his hand and nodded. It looked utterly unremarkable. An ordinary person might never have guessed that it could amplify Heart Energy, much less that a researcher like Chen Huan had spent so long developing it.
Chu Xin examined the device in confusion. There's nothing on this thing. How am I supposed to use it?
"How do I use this? Doesn't it come with a manual?"
"You wouldn't understand the manual even if I gave you one. If you want to use it, I'll explain a few things. First, this device works by suppressing a Pokémon's emotions, and every Pokémon has a different limit to what it can endure, so it needs to be calibrated before use.
"I designed three levels and four categories for the Heart Energy device. Those combinations should cover roughly all Pokémon, but each level and category needs to be calibrated. During calibration, you'll need to organize the data. First..."
Chen Huan rattled off a stream of technical jargon, his hands constantly pointing to different parts of the Heart Energy device. There seemed to be a great many steps, but how was Chu Xin supposed to understand any of that? Before long, Chen Huan's explanation had left his head spinning.
"Can't you make it simpler? Who could possibly figure out how to use it like this?"
"I can."
After handing the device to Chu Xin, Chen Huan calmly delivered a reply that nearly made him cough up blood.
Indeed, Chen Huan had invented the thing. If even he couldn't