Core Points - The documentary "Guling Letters" had its global premiere in Los Angeles on November 7, as part of the "Light and Shadow Records: Friendship Lasts" event, aimed at enhancing Sino-American cultural exchanges [1][2] - The documentary focuses on the historical and contemporary narratives of Guling, showcasing the enduring friendship between China and the United States through the lens of the Lan Maria family and American high school student Holly Baihua [2] - The documentary took nearly two years to prepare and was filmed across multiple locations in both China and the United States, with the goal of fostering greater understanding and friendship between the two nations [1][2] Summary by Sections - **Event Overview** - The global premiere of "Guling Letters" took place during the 21st China-U.S. Film Festival and Television Festival [1] - The event is part of a broader initiative to promote Sino-American friendship through storytelling [1] - **Documentary Details** - "Guling Letters" is the first co-produced documentary that tells the Guling story from an international perspective [2] - It employs a dual narrative structure, intertwining historical and contemporary elements to narrate a story that spans over a century [2] - **Future Plans** - The documentary is set to be broadcast globally on various media and new media platforms soon [2]