Visitors pose for selfie at the Beijing Aquarium on July 25. Beijing Aquarium reopened on Friday. It was temporarily shut on June 20 after Beijing reported new clusters of COVID-19 cases originating at the Xinfadi wholesale food market. [China Daily/Zou Hong]

Visitors watch the performance at the Beijing Aquarium on July 25. [China Daily/Zou Hong]

Visitors watch the performance at the Beijing Aquarium on July 25. [China Daily/Zou Hong]

Visitors watch the penguins at the Beijing Aquarium on July 25. [China Daily/Zou Hong]

Penguins walk around at the Beijing Aquarium on July 25. [China Daily/Zou Hong]