Activities to mark Public Science Day

Updated: May 18, 2023Lanzhou.gogansu.com

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A child take part in chemical laboratory-themed puzzle challenges with her mother in Lanzhou, Gansu province on May 13. [Photo provided to Lanzhou.gogansu.com]

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Copyright © Lanzhou City, Gansu Province.
All rights reserved. Presented by China Daily.

Copyright © Lanzhou City, Gansu Province. All rights reserved. Presented by China Daily.