The Chinese Government endorses a proposal by the Soviet Union for the USSR, the US, and the UK to halt nuclear weapons tests.

Cable from the Chinese Foreign Ministry to Chinese Embassies noting foreign countries' responses to China's second nuclear test.

Cable from the Chinese Embassy in Switzerland describing the efforts of the United States, the West and the Soviet Union to downplay China's nuclear test.

The Chinese Embassy in Moscow reports responses to the second Chinese nuclear test among Soviet news agencies, upper and middle class citizens, and students.

The Chinese Embassy in Moscow reports reactions from students and military personnel in the USSR to China's second nuclear test.

Cable from the Chinese Embassy in the Soviet Union describing positive responses of Soviet officials and the foreign missions regarding China's second successful nuclear test.

Gromyko informs Liu Xiao of the Soviet position and strategy in its negotiations with the United States and the United Kingdom for halting nuclear tests.

Cable from the Chinese Embassy in North Korea notes North Koreans' positive responses to China's first nuclear weapons test and a downfall of Khrushchev in the Soviet Union

The Joint Institute for Nuclear Research discusses plans for scientific research and development from 1966 through 1970, and Chinese representatives announce their plan to withdraw from the Joint Institute on 1 July, 1965

Zhou Enlai criticizes the Three-Nation Treaty (Limited Test Ban Treaty) of 1963, arguing that it signifies an attempt by the US, UK, and USSR to monopolize nuclear weapons. Enlai warns that the agreement will allow larger nuclear countries to commit “nuclear blackmail” against smaller, non-nuclear countries.