Xiao Yu waits in line to to purchase food for a customer in Guilin city, South China's Guangxi Zhuang autonomous region, Jan 27, 2015. [Photo/CFP]

He works over 16 hours every day from 8 am to 3 am, earning 7,000 to 8,000 yuan ($1,120 to $1,280) per month. Some young people call Xiao Yu and his team the "Little Supermen". Currently, the "Little Supermen" team has grown to 13 people. The errand service now also includes cash delivery and special event coordination.