Despite an unsatisfactory performance in the first several days, Zhang developed a new understanding of the industry.

"Experienced deliverymen could get a considerable income, especially those who paid more attention to work skills, such as planning the best routes," he says. "So, I tried to seize every opportunity to learn from those whose work stood out."

From only 10 orders in the first day, two weeks later, Zhang was completing over 30 daily orders and, within his first month, achieved a record of 70 orders in one day.

"I found the huge development space that the emerging industry could provide," he says. "Moreover, the income is much higher than that of a farmer, so I decided to stay on and do better."

Zhang paid more attention to improving service quality than increasing the quantity of orders.

A snowstorm in late December 2018 disrupted almost all the traffic in the city and forced deliverymen to take food to the customers on foot.

To prevent the food from getting cold, Zhang put the packages into his coat.

Around two hours later, the customer received his food and it was still warm.