
Tourists watch penguins at Ocean Park Hong Kong in Hong Kong, south China, Feb. 5, 2013. July 1, 2017 marks the 20th anniversary of Hong Kong's return to the motherland. (Xinhua/Li Peng)

Tourists watch penguins at Ocean Park Hong Kong in Hong Kong, south China, Feb. 5, 2013. July 1, 2017 marks the 20th anniversary of Hong Kong's return to the motherland. (Xinhua/Li Peng)