Mao Zedong, Chairman of the CPC Central Committee and President of the PRC paying a visit to the Union of the Soviet Socialist Republics (USSR) in December 1949, the very first visit to a foreign country by the top leader of New China.

    Mao Zedong and Stalin at the Signing Ceremony of the Sino-Soviet Treaty of Friendship, Alliance and Mutual Assistance and related agreements. Zhou Enlai, Premier of the Government Administration Council of the Central People's Government of the PRC, signing the Treaty and related agreements on February 14th, 1950.