Giant panda "Ying Ying" rests in Hong Kong Ocean Park in Hong Kong, south China, May 19, 2016. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin)

Photo taken on May 19, 2016 shows a panda artwork at the giant panda world art exhibition tour in Hong Kong Ocean Park in Hong Kong, south China. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin)

Photos of giant panda taken by photographer Zhang Zhihe are displayed at the giant panda world art exhibition tour in Hong Kong Ocean Park in Hong Kong, south China, May 19, 2016. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin)

Yao Sidan, director of Forestry Bureau of Sichuan Province, address the press conference of Sichuan Week & the giant panda world art exhibition tour in Hong Kong Ocean Park in Hong Kong, south China, May 19, 2016. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin)

A visitor takes photos of giant panda "Ying Ying" in Hong Kong Ocean Park in Hong Kong, south China, May 19, 2016. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin)

Guests pose for a group photo at the giant panda world art exhibition tour in Hong Kong Ocean Park in Hong Kong, south China. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin)

A visitor takes photos at the giant panda world art exhibition tour in Hong Kong Ocean Park in Hong Kong, south China, May 19, 2016. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin)

Photo taken on May 19, 2016 shows a panda artwork at the giant panda world art exhibition tour in Hong Kong Ocean Park in Hong Kong, south China. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin)

A visitor views photos of giant panda taken by photographer Zhang Zhihe at the giant panda world art exhibition tour in Hong Kong Ocean Park in Hong Kong, south China, May 19, 2016. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin)

Giant panda "Le Le" eats bamboo in Hong Kong Ocean Park in Hong Kong, south China, May 19, 2016. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin) 10

Photo taken on May 19, 2016 shows a panda artwork at the giant panda world art exhibition tour in Hong Kong Ocean Park in Hong Kong, south China. The Sichuan Week & giant panda world art exhibition tour will open in the park from May 20 to 29. (Xinhua/Ng Wing Kin) 11