Adhering to the principle of integrating the universal truth of Marxism-Leninism with the revolutionary practice of China, the first generation of the central collective leadership of the CPC with Comrade Mao Zedong at the core persisted in independence and self-reliance in inter-party relations with Communist Parties of other countries. In order to break through the encirclement and blockade of the hostile forces of the West against New China, the Communist Party of China succeeded in opening the gate to the outside world for the young Republic through friendly exchanges and visits with the socialist countries, the communist Parties of various countries and other progressive forces. Comrade Mao Zedong pointed out that “Socialist countries are friends and we should unite with them very well. Besides, we also need to unite with friends in the capitalist countries. It will not do without friends.” During that time, the CPC also had exchanges with other political parties in some western countries. In the 1950’s and 1960’s, the CPC experienced twists and turns in its external exchanges in the great polemics within the international communist movement. However, it went through the test and was tempered in the struggle of safeguarding the independence and sovereignty of the Party and the State as well as in rendering support to the peoples of various countries in their fight against imperialism, colonialism and hegemonism.