User:Editthat1/京师保卫战

Defense of Beijing(simplified Chinese:北京保卫战; traditional Chinese:北京保衛戰), also known as Defense of Capital(simplified Chinese:京师保卫战; traditional Chinese: 京師保衛戰), was a siege battle launched by Oirat Mongols' leader Esen on Ming China's capital Beijing which happened right after the Tumu Crisis, during October, 1449. Under the firm leadership of Minister Yu Qian, Ming dynasty was able to repel Oirats' siege and attack.

Background
Oirat was one of three major Mongol tribes in Outer Mongolia during 15th century, the other two tribes were Uriankhai and Tartar(Eastern Mongols). In early Ming period, Toghan(Chinese translation:脫歡) was Oirat's leader.