People run in Beijing's Olympic Forest Park at around 6am on July 5, 2015. As the city experiences high temperature, more people are preferring to do their outdoor exercise as early as possible. Made for the 2008 Olympic Games, the largest city park has three running tracks of 3km, 5km and 10km, and is considered as a paradise for running in Beijing. It is easy to spot professional and casual runners, and everything in between. [Photo by Du Wei/For chinadaily.com.cn]