Ancient+Civilizations+of+China



===China is one of the countries who earliest developed civilizations in the world. Its four major inventions of ancient science and technology, paper making, printing paiting, the compass, and gunpowder, had made great contribution to the world civilization.=== ===PLEASE read the text and tell us what is the paper making, printing paiting, the compass, and gunpowder, in the discussion, and including how this ancient science and technology contribute to the world civilization developing?===