Yang Youxin (right) and his colleague are ready to unload parcels from a truck. [Photo/IC]

Since Nov 11, 2015, the most important online shopping festival in China, deliveryman Yang Youxin in Pudong New Area, Shanghai has not had a good sleep.

Yang works hard through the mountain of parcels that are to be delivered. The process is repeated on a daily basis, and the mountain seems to only get bigger.

Yang is just one of the 1.7 million deliverymen in China.

Alibaba's Tmall online marketplace reported sales of 91.2 billion yuan ($14.3 billion) on this year's Singles' Day shopping spree, a 60-percent rise from last year's 51.7 billion yuan.

The purchases meant 467 million parcels needing to be delivered nationwide.