Business Insider:

Imagine going to work at 7:30 every night and spending the next 12 hours, including meals and breaks, inside a factory where your only job is to insert a single screw into the back of a smartphone, repeating the task over and over and over again.

During the day, you sleep in a shared dorm room, and in the evening, you wake up and start all over again.

That’s the routine that Dejian Zeng experienced when he spent six weeks working at an iPhone factory near Shanghai, China, last summer.

Factory work is never easy. It’s often mindless, tedious work.