精选优质文档-倾情为你奉上Unit1 Great explorationsThe voyages of Zheng He Zheng He was a famous Chinese explorer. In 1405, he set off from China on the first of seven great voyages. This was nearly a century before Christopher Columbus first set sail on his journey of discovery to America. His travels were so important that they are still studied today. Zheng He was born in Yunnan in 1371. He rose to become a trusted official of the Yongle Emperor of the Ming Dynasty. The emperor ordered Zhen
