Guan Hong (R), chairman of the Chongqing International Culture Association, transfers materials of the newly restored version of the documentary "Kukan" at the Academy Museum of Motion Pictures in Los Angeles, the United States, June 24, 2025.

The newly restored version of the documentary "Kukan" was premiered here on Tuesday.

"Kukan," meaning "bitter struggle" or "hard work" in Chinese, is an Oscar-winning documentary produced by Chinese American playwright Li Ling-Ai and filmed by American correspondent Rey Scott. (Photo by Zeng Hui/Xinhua)