The Zheng Tong Emperor

In 1457 palace officials launched a coup, forcing their way into the Zheng Tong emperor's chambers and whisking him away to the throne room for a surprise coronation. For nearly seven years, the former Zheng Tong emperor was kept as a prisoner of his brother in a pavilion in the southern part of the Forbidden City. He would be the only emperor of the Ming era and one of the few in Chinese history to have two separate turns on the dragon throne.