Bulgaria. View of the city of Sofia. The building where the congress was held; congress delegates enter the building; visiting the exhibits of the exhibition dedicated to the congress: photographs, newspapers, magazines. View of the presidium of the congress. Chairman of the Central Committee of the Bulgarian-Soviet Friendship Society M. Neichev makes a report. Welcoming speeches are made by: Secretary of the Central Committee of the BKP Chankov, representative of the Society of Sino-Soviet Friendship Tsao Ming-tszyun, Secretary of the Sofia City Society, Bulgarian-Soviet Friendship B. Mitev, and other officials. Pioneers of Bulgaria speak at the congress.