"Our city will be the first to hold both summer and winter olympics" : a comparative analysis of how media coverage and public opinion were framed on social media in the lead up to the Beijing 2022 winter Olympic games - Yang, Zesheng (Universitat Autònoma de Barcelona. Departament de Comunicació Audiovisual i Publicitat) ; Ruan, Yang ; Zhang, Jianing (Macau University of Science and Technology)