Astronauts give 3rd live class from China's space station(1/6)

A senior man watches the 3rd live class of the "Tiangong Class" series in Beijing, Oct. 12, 2022. (Photo: China News Service/Hou Yu)

Three Chinese astronauts Chen Dong, Liu Yang and Cai Xuzhe delivered the 3rd science lecture on Wednesday afternoon from the "Tiangong" Space Station. It is the first science lecture from the Wentian lab module.

A kid watches the 3rd live class of the "Tiangong Class" series in Beijing, Oct. 12, 2022. (Photo: China News Service/Hou Yu)

A outdoor television broadcasts the 3rd live class of the "Tiangong Class" series outside a store in Beijing, Oct. 12, 2022. (Photo: China News Service/Hou Yu)

A deliveryman watches the 3rd live class of the "Tiangong Class" series in Beijing, Oct. 12, 2022. (Photo: China News Service/Hou Yu)

Primary school students watch the 3rd live class of the "Tiangong Class" series in Tongzi county of Zunyi city, southwest China's Guizhou Province, Oct. 12, 2022. (Photo: China News Service/Qu Honglun)

Primary school students watch the 3rd live class of the "Tiangong Class" series in Tongzi county of Zunyi city, southwest China's Guizhou Province, Oct. 12, 2022. (Photo: China News Service/Qu Honglun)