Ｔｈｅ　Ｍｏｔｈｅｒ　ｏｆ　Ｉｎｖｅｎｔｉｏｎ

ＬＡＮＸＩＮＺＨＥＮ

At the opening ceremony of the Beijing Olympic Games, China's four great inventions-gunpowder,compass, papermaking technology and the art of printing-formed a major part of the celebrations to introduce the country to the world.