Parents
1119
Sep 5
| 1119 • Zhu Yu's book is the first to report the use of a magnetic compass for navigation at sea, although the first actual description of the magnetic compass is by another Chinese writer Shen Kuo in his Dream Pool Essays published in 1088. |
1180
Sep 18
Age: 61y
| 1180 • Estimation: Hangzhou, capital of Southern Song China, becomes the largest city of the world, taking the lead from Fes in the Almohad Empire.[http://geography.about.com/library/weekly/aa011201a.htm Geography at about.com] |