Examines the changing ideologies and conflicts between Hong Kong and the mainland from 2012 to the present.

The New Politics of Beijing–Hong Kong Relations particularly examines the paternalistic authoritarianism that can be seen in Beijing's policy toward Hong Kong since the promulgation of the national security law in late June 2020. Lo analyzes the ideological shift from liberal nationalism to conservative nationalism on the mainland Chinese side since late 2012. The increasingly radical localism on the Hong Kong side after 2014 altered Beijing-Hong Kong relations and introduced factional struggles. While the imposition of the national security law into Hong Kong in late June 2020 has stabilized the city politically, Beijing's policy toward Hong Kong is now guided by the principles of protecting its national security and maintaining economic pragmatism, with implications for Beijing's relations with Taipei in the coming years.