The middle-aged man was named Yu Ping'an, who used to be a senior technician at a screw factory.
According to him, his favorite pastime was to make weapons like slingshots using leftover materials from the factory.
The purpose of making this revolver was very straightforward.
It was to showcase his abilities.
So as to improve his treatment.
The young apprentice who assisted him was an apprentice in the factory named Wang Yuan.
He dropped out of junior high school and entered the factory, becoming his apprentice.
The two had come to the hotel together.
As for the young man who created a crossbow from steel plates and iron wires, he was a genuine mechanical prodigy named Zhang Zhe.
He used to be an engineer in a machinery factory, responsible for product development and design.
