A Christies spring auction is held in Hong Koong, south China, May 30, 2016. July 1, 2017 marks the 20th anniversary of Hong Kong's return to the motherland. (Xinhua/Li Peng)
Hong Kong's 20th return anniversary to be celebrated on July 1
Xinhua| 2017-06-01 09:41:36|Editor: Yamei