People participate in a color run event in Chicago, the United States, on June 15, 2019. The color run is a five-kilometer event with over one thousand participants this year. (Photo: Xinhua)

People participate in a color run event in Chicago, the United States, on June 15, 2019. The color run is a five-kilometer event with over one thousand participants this year. (Photo: Xinhua)

People participate in a color run event in Chicago, the United States, on June 15, 2019. The color run is a five-kilometer event with over one thousand participants this year. (Photo: Xinhua)

People participate in a color run event in Chicago, the United States, on June 15, 2019. The color run is a five-kilometer event with over one thousand participants this year. (Photo: Xinhua)

People participate in a color run event in Chicago, the United States, on June 15, 2019. The color run is a five-kilometer event with over one thousand participants this year. (Photo: Xinhua)