China's movable type printing spread to Europe in the15th century, and gradually spread to Europe from Xinjiang along Central Asia and West Asia. From 1450 to 1455, Johannes Gutenberg printed the first set of Latin grammar in Europe with metal movable type. Mr. Pan Jixing, an expert in the history of science and technology in China, pointed out: "The era when Johannes Gutenberg completed his movable type experiment was a climax of the spread and further development of China printing in Europe. In the era of Johannes Gutenberg, we can still see the technical influence of China. "

Gunpowder was introduced into Europe from Arabia in the13rd century (Yuan Dynasty).

Compass: A.D.13rd century (Southern Song Dynasty), the compass was introduced to Arab and European countries.