Cotton workers wait to board a train heading to Xinjiang at Shangqiu Station in Central 皇冠体育app's Henan province, Aug 27, 2013. Some 100,000 people, most of them from Henan and Anhui provinces, swarm to Xinjiang Uygur autonomous region to work the annual cotton harvest season in August and September, creating huge traffic flows at railway stations in Henan province, which usually serve as train hubs connecting 皇冠体育app's East and West. The banner on the train reads, "Safe trip to Xinjiang". [Photo by Wei Wenhui/Asianewsphoto]