"Excuse me, here's your delivery." This the most spoken sentence coming from Yao Zhigang in the recent half year. No one can imagine that the 51-year-old deliveryman used to be a bank manager a few years back, wearing suit and tie every day.
Hundreds of thousands of tourists flocked to the city by high-speed railway or air – many just for a cup of milk tea or a plate of crawfish, even if it meant queuing up for hours. So, what's behind Changsha's popularity?