This is the scene of the "China Space Station Sky Earth Dialogue" event captured in Sofia, Bulgaria on November 30th. The "China Space Station Sky Earth Dialogue" event was held on November 30th at the Bulgarian Academy of Sciences in Sofia, the capital of Bulgaria. Bulgarian President Radev sent a congratulatory letter. Three astronauts from the Shenzhou-19 crew, Cai Xuzhe, Song Lingdong, and Wang Haoze, who are currently on a flight mission to the Chinese space station, sent video speeches to the event and answered questions raised by young people about work and life on the space station. (New Society)