Subandrio writes a letter to Premier Zhou Enlai, praising the idea proposed in a previous message from China about holding a summit conference on general disarmament and banning of nuclear weapons. Subandrio suggests that the conference could have a higher chance of success if the 5 nuclear states (US, USSR, UK, France, and China) met prior to the summit.

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 addresses the State Council citing a need for China to "master atomic energy." The Chinese program is far behind in this area, but plans to catch up with the help of Soviet technical assistance.