(Xinhua) 10:28, April 01, 2024 Students participate in a Model UN conference in a middle school in Qingdao, east China's Shandong Province, March 30, 2024. (Xinhua/Li Ziheng) Students participate in a Model UN conference in a middle school in Qingdao, east China's Shandong Province, March 30, 2024. (Xinhua/Li Ziheng)