日ソ中立条約
On August 9, Kwantung Army supreme commander, General Otozō Yamada, informed Puyi that the Soviet Union had violated the Soviet–Japanese Neutrality Pact and had invaded across the Manchukuo frontier. Although assured by General Yamada that the situation was under control, the same day Hsinking was attacked by the first air raid of the war, and Puyi witnessed explosions from bombs falling near the Wei Huang Gong palace.