He’s one of the only humans at work -- and he loves it

In the warehouse where Zou works, machines guided by image scanners handle all the goods, largely cellphones and cameras and other rectangular-shaped electronics.

Packages travel along a highway of belts. Mechanical arms stationed throughout the network place the items on the right tracks, wrap them in plastic or cardboard and set them onto motorized pucks dubbed “little red men” — a nickname inspired by the spunky creatures in the Minions films.

The little red men carry the parcels across a floor that resembles a giant checkerboard and plunk them down chutes to sacks. Computerized shelves on wheels retrieve the loads and transport them to trucks, which deliver most orders within 24 hours of a shopper’s click.