Zhengtong Emperor
Back in power, the Zhengtong Emperor, now ruling under the new era name of Tianshun, first promoted and then became distrustful of officials who had aided his restoration. One of them, the grand eunuch Cao Jixiang, decided to strike at the throne. In August 1461, Cao's adopted son, Cao Qin, launched a mutiny among ethnic Mongol troops stationed inside Beijing. The plot was betrayed and the Tianshun Emperor ordered the gates of the Forbidden City and the Inner City closed, trapping the mutineers, who were unable to break into the palace complex and were killed.