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

Chairul Seleh of Indonesia met with Mao and discussed nuclear power, Indonesian economy and industry, Chinese-Indonesian relations, and imperialism.

Speaking at the Politburo, Zhou Enlai explains how nuclear weapons capabilities have won China newfound admiration in the non-aligned world and instilled fear in the other nuclear powers, particularly the United States and Soviet Union.

Zhou Enlai informs Mao Zedong that favorable weather conditions will allow them to carry out the aerial nuclear test explosion. An official statement for the press has also been prepared.

On May 10, Chinese military officials confirm that they are prepared to detonate an aerial nuclear explosion but, due to unfavorable weather conditions, must postpone the test until May 12 or 13.

Having successfully executed a nuclear test explosion, Zhou Enlai describes the Chinese government’s motivation for pursuing atomic weapons capabilities. Zhou argues that the Three-Nation Treaty (Limited Test Ban Treaty) is insufficient, that the United States remains committed to nuclear proliferation despite the agreement, and that China seeks to end the monopoly that other nuclear powers have thus far exploited. Zhou also calls for the organization of a global, truly equal summit at which to discuss the issue of nuclear weapons testing and proliferation.

Zhou Enlai notifies Mao Zedong and other prominent political and military officials that preparations have been made to detonate the explosion between October 15 and 20, depending on weather conditions. Attention is also given to the high level of secrecy surrounding the explosion, methods of data collection, publicity, and the political consequences of the explosion.

Zhou Enlai offers multiple dates on which the first nuclear test explosion may take place and asks Mao Zedong for his preference.

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.