An international chemistry teacher demonstrates science experiments to young people attending the 6th China Science Festival 2019 on Aug. 3 at the China Soong Ching Ling Science and Culture Center for the Young in Beijing. [Photo by Chen Boyuan / China.org.cn]

Two students pose for a picture with a figure of Jabir ibn Hayyan, a known ancient Muslim polymath, philosopher, and alchemist, at the 6th China Science Festival, 2019 on Aug. 3 at the China Soong Ching Ling Science and Culture Center for the Young in Beijing. [Photo by Chen Boyuan / China.org.cn]

Students enjoy a live PACMAN game at the 6th China Science Festival 2019 on Aug. 3 at the China Soong Ching Ling Science and Culture Center for the Young people in Beijing. [Photo by Chen Boyuan / China.org.cn]

Students play with science gadgets at the 6th China Science Festival 2019 on Aug. 3 at the China Soong Ching Ling Science and Culture Center for the Young in Beijing. [Photo by Chen Boyuan / China.org.cn]

Students play a "Challenge the Pixel" game by throwing soft balls at a projection during the 6th China Science Festival 2019 on Aug. 3 at the China Soong Ching Ling Science and Culture Center for the Young in Beijing. [Photo by Chen Boyuan / China.org.cn]

A Chinese and an international teacher teach chemistry to students attending the 6th China Science Festival 2019 on Aug. 3 at the China Soong Ching Ling Science and Culture Center for the Young in Beijing. [Photo by Chen Boyuan / China.org.cn]

Students and volunteers take part in a robot football match during the 6th China Science Festival 2019 on Aug. 3 at the China Soong Ching Ling Science and Culture Center for the Young in Beijing. [Photo by Chen Boyuan / China.org.cn]

A young girl experiences "Electronic Rock Climbing" by climbing an interior rock wall while hitting moving objects projected on it during the 6th China Science Festival 2019 on Aug. 3 at the China Soong Ching Ling Science and Culture Center for the Young in Beijing. [Photo by Chen Boyuan / China.org.cn]

A volunteer (middle) explains to a student (left) why a double cone can climb up inclined rails during the 6th China Science Festival 2019 on Aug. 3 at the China Soong Ching Ling Science and Culture Center for the Young in Beijing. [Photo by Chen Boyuan / China.org.cn]