Tumu Crisis
…as the Crisis of the Tumu Fortress, or the Jisi Incident, was a border conflict between the Oirat Mongols and the Ming dynasty of China. In July 1449, Esen Taishi, leader of the Oirat Mongols, launched a large-scale, three-pronged invasion of China. Despite having capable generals, Emperor Yingzong of Ming, under…