(250511) -- BEIJING, May 11, 2025 (Xinhua) -- A firefighter introduces the application of pulleys to students in Jinggu County of Pu'er City, southwest China's Yunnan Province, May 9, 2025. China observes the National Disaster Prevention and Reduction Day on May 12 each year. Various publicity, drill and training activities are carried out across China to improve public awareness in scientific disaster prevention and self-rescue. (Photo by Guo Yuanshou/Xinhua)