1950 : Tibet invaded by PLA 1950 : Sino-Soviet Treaty Signed 1950 : China enters Korean War 1954 : Geneva Convention 1958 : PRC attacks offshore islands under Nationalist control 1960 : Withdrawal of the Soviet technical advisors 1962 : Sino-Indian War 1963 : Mao attacks policy of peaceful coexistence 1969 : Sino Soviet Split 1971 : PRC raplaces Taiwan in UNSC 1972 : Visit of Nixon to China