
Tourists watch a 3D light show at the Hong Kong Cultural Center in Hong Kong, south China, March 5, 2015. July 1, 2017 marks the 20th anniversary of Hong Kong's return to the motherland. (Xinhua/Li Peng)

Tourists watch a 3D light show at the Hong Kong Cultural Center in Hong Kong, south China, March 5, 2015. July 1, 2017 marks the 20th anniversary of Hong Kong's return to the motherland. (Xinhua/Li Peng)