A textbook for students of Qing Dynasty (1644-1911) is on display at an exhibition in Zhengzhou Normal University in Zhengzhou, Central China's Henan province on September 9, 2014. The event, held to mark the country's Teacher's Day, featured antique items related to education including textbooks, graduation certificates and graduation photos from Qing Dynasty and the Republic of China (1912 - 1949). [Photo/China News Service]