A staff member shows an interactive model displayed during an exhibition celebrating the 20th anniversary of the establishment of Hong Kong Special Administrative Region (HKSAR), in Hong Kong, June 19, 2017. (Xinhua/Wang Xi)
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A staff member shows an interactive model displayed during an exhibition celebrating the 20th anniversary of the establishment of Hong Kong Special Administrative Region (HKSAR), in Hong Kong, June 19, 2017. (Xinhua/Wang Xi)
