Liu Shaoqi was the second and final Chairman of the People's Republic of China, succeeding Mao Zedong. In 1961, Liu inaugurated the Sino-Soviet Split, calling the Soviet Union a "Revisionist Traitor Group". In 1969, just a few years after the conclusion of the Cuban War, the Sino-Soviet War erupted over a few potshots over Zhenbao Island in the Amur River. Soviet forces came thundering through Manchuria, and sacked their way to Beijing. Beijing was shelled to ruins, and Mao, Liu, and other Chinese officials were killed. China was then annexed into the Soviet Union and divided into several S.S.R.s.