Ｏｕｒ Ｐａｓｔ Ｇｌｏｒｉｅｓ

ＹＡＯ　ＢＩＮ

When China's ancient scientific and technological achieve-ments are mentioned, the nation will generally refer to the Four Great Inventions. The four symbolic creations-compass, papermaking,printing and gunpowder-are the pride of China's 5,000-year-old culture, because of their recognized role in the development of human civilization.