Water lilies are seen at Kenilworth Park & Aquatic Gardens in Washington D.C., the United States, on July 3, 2019. (Photo: Xinhua)

Lotus seed pods are seen at Kenilworth Park & Aquatic Gardens in Washington D.C., the United States, on July 3, 2019. (Photo: Xinhua)

Water lilies are seen at Kenilworth Park & Aquatic Gardens in Washington D.C., the United States, on July 3, 2019.(Photo: Xinhua)

Water lilies are seen at Kenilworth Park & Aquatic Gardens in Washington D.C., the United States, on July 3, 2019.(Photo: Xinhua)

Lotus flowers are seen at Kenilworth Park & Aquatic Gardens in Washington D.C., the United States, on July 3, 2019.(Photo: Xinhua)

A lotus flower is seen at Kenilworth Park & Aquatic Gardens in Washington D.C., the United States, on July 3, 2019. (Photo: Xinhua)

A lotus flower is seen at Kenilworth Park & Aquatic Gardens in Washington D.C., the United States, on July 3, 2019. (Photo: Xinhua)

Lotus flowers are seen at Kenilworth Park & Aquatic Gardens in Washington D.C., the United States, on July 3, 2019. (Photo: Xinhua)

A dragonfly rests on a lotus seed pod at Kenilworth Park & Aquatic Gardens in Washington D.C., the United States, on July 3, 2019. (Photo: Xinhua)