四五运动
The Wuhan incident was the most serious uprising against the Cultural Revolution political order until the 1976 Tiananmen Incident. It is generally characterized by historians as an uprising of the Wuhan military establishment and a broad section of Wuhan society against the Cultural Revolution leadership. Indeed, Mao himself had been warned about the possibility of a 'coup' by Chen Zaidao in response to the verdict on the Wuhan Military Region, though in reality such a coup never materialized.