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.

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.

The Soviet Central Committee informs their Chinese counterparts that, in light of the arms reduction talks taking place in Geneva, Soviet nuclear assistance must cease. The Chinese had requested a sample atomic bomb and technical data, but the Soviet feared that doing so would imperil the efforts of the socialist countries in Geneva.

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.