From 1949 to 1955, the establishment and development of various undertakings in the early days of the establishment of the Ministry of Foreign Affairs of China was the main line.

At the beginning of 1949, the three major battles have been completely won, and the national liberation is a foregone conclusion. He said three words to Mao Zedong, the foreign policy of the new China: "Start a new stove", "Clean the house first and then treat it" and "One-sided". These three sentences are Mao Zedong's classic judgments based on the internal and external situation of China at that time. These three sentences about China's foreign policy are the guiding ideology of China's diplomatic strategy based on the international environment, safeguarding national interests and starting from ideology after careful consideration. This policy actually laid the basic diplomatic pattern in the first decade after the founding of New China, and also determined China's position and role in the East-West Cold War during this period.

In the 1970s:

The "One Line" strategy guided China's diplomacy in the 1970s. The New Situation of Mao Zedong's Diplomacy with China The 1970s was a period in which Mao Zedong guided China's diplomacy to make continuous achievements in his later years. In the complicated and fierce international struggle, he paid vigilant attention to safeguarding China's security, withstood the pressure of the superpower, and firmly defended China's national independence, sovereignty integrity and national dignity. He made the correct adjustment of foreign policy, opened up a new situation in China's diplomacy, won a favorable international environment for China's socialist construction, and put forward the correct strategy of "three-thirds world" and the idea that China will never seek hegemony. On the world stage, China stands in the East as an independent and self-reliant country, and its international status and influence are constantly improving. Mao Zedong's strategic guidance to China's diplomacy in his later years reflects his thinking on international issues in his later years.

After the reform and opening up:

On the basis of the Five Principles of Peace, we will open up to the outside world in an all-round way, strengthen unity and cooperation with the third world, be good neighbors and friendly, and be non-aligned and invincible.

First of all, after more than 30 years of efforts since the founding of the People's Republic of China, China's national strength has been greatly improved, and the strategic environment for national security has also been greatly improved. It is indeed possible to concentrate on peace building. The Third Plenary Session of the Eleventh Central Committee decided to shift the focus of national work to economic construction, which needs a long-term peaceful international environment.

Secondly, the strategic situation of the international struggle between the United States and the Soviet Union has changed. The Soviet Union was dragged in Afghanistan, and the United States succeeded again and again in Central America. In the pattern of the basic balance of power between the United States and the Soviet Union and the confrontation for hegemony, China, as a big country with certain strength, may break the balance of power and encourage one side's hegemonic tendency no matter which side it forms an alliance or establishes a strategic relationship with. China, as a peaceful force, is independent of the two great powers, which is of great significance to the maintenance of world peace.

Third, China recognizes the important influence of the world's scientific and economic development on the maintenance of world peace, as well as the vigorous development of the new scientific and technological revolution and the increasingly prominent position of economic science and technology in world competition. In this way, peace and development are organically combined, and development is regarded as an important factor to restrict, prevent and even eliminate the danger of war. It is recognized that peace is a necessary condition for development and development is the fundamental guarantee of peace.