青海三线建设（大通）教育基地开馆

Core Viewpoint - The Qinghai Sanxian Construction (Datong) Education Base has been inaugurated to commemorate the historical significance of the "Sanxian Construction" movement in China, which took place from the mid-1960s to the early 1980s, focusing on defense industrial development in the central and western regions of the country [2][4][5]. Group 1 - The education base serves as a thematic venue established by Qinghai Province to honor the history of the "Sanxian Construction" [2][4][5]. - The "Sanxian Construction" was a large-scale economic construction movement aimed at military preparedness and focused on national defense industries [5][7][9]. - This movement is recognized as a significant strategic adjustment in the history of New China, impacting the country's development trajectory [5][11][13]. Group 2 - The opening ceremony of the education base included exhibitions showcasing various aspects of the "Sanxian Construction," attracting public interest [2][9][11]. - The venue features outdoor displays, including exhibits related to coal mining and other industrial elements from the "Sanxian Construction" era [9][11][13]. - Aerial photography of the education base highlights its significance and the scale of the exhibits presented [13].