People visit the Botanic Garden of the 2019 Beijing International Horticultural Exhibition (Expo 2019 Beijing) in Yanqing district, Beijing, Aug 25, 2019. (Photos: chinadaily.com.cn)

Visitors pass the cactus area at the Botanic Garden of the 2019 Beijing International Horticultural Exhibition (Expo 2019 Beijing) in Yanqing district, Beijing, Aug 25, 2019.

Performers put on a Dunhuang dance show as Gansu Day is celebrated at the 2019 Beijing International Horticultural Exhibition (Expo 2019 Beijing) in Yanqing district, Beijing, Aug 25, 2019.

Performers for a float parade greet visitors to the 2019 Beijing International Horticultural Exhibition (Expo 2019 Beijing) in Yanqing district, Beijing, Aug 25, 2019.

Crowds come to see the float parade at the 2019 Beijing International Horticultural Exhibition (Expo 2019 Beijing) in Yanqing district, Beijing, Aug 25, 2019.