2021-02-20 05:35:37 GMT2021-02-20 13:35:37(Beijing Time) Xinhua English BEIJING, Feb. 20 (Xinhua) -- A Chinese academic has called for changes to the electoral system of the Hong Kong Special Administrative Region (HKSAR) to plug its loopholes so that the principle of "patriots governing Hong Kong" can be fully implemented. Most countries examine the qualifications of their election candidates and have some basic principles to ensure the candidates running for public office are patriots, said He Junzhi, deputy head of the Chinese Association of Hong Kong and Macao Studies. The inadequacy of such regulations in Hong Kong gives plenty of space to anti-China rioters, said He, who is also the executive deputy director of the Institute of Guangdong, Hong Kong and Macao Development Studies at Sun Yat-sen University.