A giant panda eats food at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin)

A giant panda born in 2015 is seen at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin)

Two giant pandas born in 2015 are seen at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin)

Photo taken on May 11,2016 shows enclosures for giant pandas at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin)

A researcher holds a giant panda born in 2015 at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin)

A opening ceremony for the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda is held in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin)

Carrie Lam Cheng Yuet-ngor (R), chief secretary for Administration of Hong Kong Special Administrative Region government, interacts with a giant panda at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin)

A giant panda born in 2015 is seen at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin)

A giant panda born in 2015 is seen at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin)

A giant panda eats food at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin) 10

A giant panda born in 2015 is seen at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin) 11

A giant panda born in 2015 is seen at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin) 12

A giant panda is seen at the Shenshuping protection base under the China Conservation and Research Center for the Giant Panda in the Wolong National Nature Reserve, southwest China's Sichuan Province, May 11, 2016. The protection base, sponsored by the Hong Kong Special Administrative Region, officially started operation Wednesday. It will be used for breeding, reproduction, wildness trainings and scientific studies of giant pandas. (Xinhua/Xue Yubin) 13