
Tourists visit the 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 visit the 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)