For 10 points, name this leader who faced demonstrations sparked by the death of Hu Yaobang at Tiananmen Square, the Chinese Communist leader of the 70s and 80s.
Under this man's leadership, Democracy Wall was opened, and after it was closed down a few months later, this man launched a brief invasion of Vietnam. This man was politically rehabilitated and appointed as Vice-Premier by Hua Guofeng, but this man later replaced Hua with his protégé Zhao Ziyang. He emphasized Zhou Enlai's conception of the Four Modernizations, and early in his career, he was purged by the Gang of Four. For 10 points, name this leader who faced demonstrations sparked by the death of Hu Yaobang at Tiananmen Square, the Chinese Communist leader of the 70s and 80s.
Under this man's leadership, Democracy Wall was opened, and after it was closed down a few months later, this man launched a brief invasion of Vietnam.
Deng Xiaoping