Koi fish seen in Jinshui River around the Palace Museum, Beijing

Photo taken on July 9, 2021 shows the koi fish in Jinshui River outside the Palace Museum, Beijing, China's capital city. 600 fish including Xingguo red carp, Chinese color carp, and four major home breams selected from Beijing suburbs will be released into the Jinshui River and Yuhuayuan Pool at the Palace Museum for visitors to enjoy. (Chen Xiaogen/Guangming Picture)