Chinese people are used to being able to shop online whenever wherever, thanks to the country's fast and powerful logistics system. And that's keeping deliverymen very, very busy.

"I start at 8:00 in the morning. We sort out all the packages before sending them out. I work 10 hours a day, seven days a week. There is no rest," said Guo Beibei, a deliveryman in Shanghai.

Guo is always on the move. It's not an easy job running up and down the stairs of apartment buildings in the older part of Shanghai where he works – a place where elevators are few.

"I deliver about 150 packages a day. You get used to it, you know. Many people here know me, and sometimes they come down to pick up their packages, so it makes things easier," said Guo.