Standing beside a minibus in the Chaoyang district of Beijing, Fu Yongjian stares at a sheet of paper full of names and telephone numbers.

He is waiting for people to pick up breakfasts they have ordered online.

"On average, there are 60 breakfasts every weekday," said the 43-year-old, who is one of the 4,000 professional deliverymen at ele.me. They are called the "knights" of the food-ordering platform.