Core Viewpoint - The article highlights the transformation of the Copacabana Fort from a military stronghold to a cultural and tourist attraction, emphasizing its role in promoting Sino-Brazilian cultural exchanges through music and art [1][3][5]. Group 1: Historical Significance - The Copacabana Fort, built in 1914, served as a strategic military defense but has been inactive since 1987, now functioning as a military history museum [3]. - The fort's artillery, including the 305mm dual-mounted main guns, remains a focal point for visitors, symbolizing its historical military significance [3]. Group 2: Cultural Transformation - The fort has evolved into a vibrant venue for cultural events, including concerts by the Copacabana Fort Orchestra, which features musicians from local favelas, aiming to provide a platform for their musical talents [4]. - The orchestra's collaboration with China National Offshore Oil Corporation (CNOOC) Brazil has been pivotal in sustaining its activities, showcasing the impact of international support on local cultural initiatives [4][5]. Group 3: Sino-Brazilian Relations - The integration of Chinese cultural elements at the fort, such as exhibitions and performances, has fostered a deeper cultural connection between China and Brazil, making the fort a "romantic garden" for cultural exchange [5]. - Events like the "Chinese Stories" photography exhibition and traditional Chinese performances have attracted significant local interest, enhancing mutual understanding between the two nations [5].