The Yi River is the second longest river in Shandong, running through the downtown area of Linyi with a sinuous like, and nourishing this famous cultural city like the breast milk. In 2007, Linyi planned and constructed the "one-hundred-mile Yi River fitness corridor". In the corridor, there are Five Rings Fitness Square, Phoenix Square, Sailing Square, Basketball Square, Science Popularization Square, Sunshine Bay and other more than 30 concentrated and contiguous fitness fields.