Photo taken on July 31, 2017 shows the giant panda Cao Cao who gave the birth of the first giant panda cub with both captive and wild parents in southwest China's Sichuan Province. The world's first giant panda cub with both captive and wild parents was born early Monday in Sichuan Province. The cub marked success in experiments to encourage captive pandas to mate with wild pandas in order to increase the genetic diversity of the captive stock.(Photo/Xinhua)
