It has been more than six months since the national security law took effect in China's Hong Kong Special Administrative Region (HKSAR). Hong Kong and Macao Affairs Office of the State Council Director Xia Baolong said the HKSAR's administrative, legislative and judicial branches must not be taken up by anyone "who goes against China and disrupts Hong Kong." However, he clarified that this did not mean banning all opposition members from the HKSAR government. So, what exactly did he mean? Will such a prohibition hurt HKSAR's democratic values? In an exclusive interview with CGTN, former HKSAR Chief Executive Leung Chun-Ying shares his views.