Students enjoy various summer vacation activities in E China
A child learns to brush teeth through a human oral model at a science and technology museum in Zaozhuang City, east China’s Shandong Province, July 5, 2025. (Photo by Liu…
A child learns to brush teeth through a human oral model at a science and technology museum in Zaozhuang City, east China’s Shandong Province, July 5, 2025. (Photo by Liu…