1950.

China and Vietnam established diplomatic relations on January 18, 1950. China, which had not yet recovered from the huge war trauma of the civil war, began to provide Vietnam with a total of hundreds of billions of yuan in funds and millions of tons of fuel free of charge. After the war broke out in Vietnam, a large amount of materials were donated to Vietnam free of charge and a large number of scientific and technological personnel were sent to help Vietnam develop industry and support Vietnam's war, which eventually forced the United States to sign an armistice agreement. China has also been selling mineral products to Vietnam at very low prices.

In 1958, Vietnam "recognized that the Nansha Islands belong to China" original credentials. Original translation: Office of the Prime Minister of the Democratic Republic of Vietnam Dear Comrade Premier (Zhou Enlai): We solemnly declare to Comrade Prime Minister that the Government of the Democratic Republic of Vietnam recognizes and approves the declaration of the Democratic Republic of China in 1958 Decision and statement on China’s territorial waters made on September 4. We extend our sincere respect to Comrade Prime Minister! On September 14, 1958, in Hanoi, I paid tribute to Comrade Zhou Enlai, Premier of the State Council of the People's Republic of China, and Prime Minister of the Government of the Democratic Republic of Vietnam: Pham Van Dong (signature and seal).

Sun Guoxiang, the current Chinese Ambassador to Vietnam, submitted his credentials on December 16, 2008.

The current Vietnamese Ambassador to China, Nguyen Van Thi, submitted his credentials on September 19, 2008.