Lanzhou, and he is just one of many involved in this profitable, but gruesome, trade. The Shanghai paper also reported that in recent times there has been an annual increase of 200 to 300 corpses retrieved in and around Lanzhou. The presence of decomposing humans in the waterway is not just limited to the area around the Gansu capital. Body fishers work most of the Yellow River, Asias second longest, from west of Lanzhou to Shandong province at its mouth.
http://www.forbes.com/sites/gordonchang/2013/03/31/now-in-chinas-rivers-decomposing-humans/