People visit the 42nd Royal Rose Exhibition at Royal Lazienki Park in Warsaw, Poland, on Aug. 21, 2026. The exhibition is held from Aug. 21 to 23 at Royal Lazienki Park, showcasing roses and floral arrangements from around the world. (Photo by Alexey Vitvitsky/Xinhua)

A visitor takes photos of flowers during the 42nd Royal Rose Exhibition at Royal Lazienki Park in Warsaw, Poland, on Aug. 21, 2026. The exhibition is held from Aug. 21 to 23 at Royal Lazienki Park, showcasing roses and floral arrangements from around the world. (Photo by Alexey Vitvitsky/Xinhua)

Roses are pictured during the 42nd Royal Rose Exhibition at Royal Lazienki Park in Warsaw, Poland, on Aug. 21, 2026. The exhibition is held from Aug. 21 to 23 at Royal Lazienki Park, showcasing roses and floral arrangements from around the world. (Photo by Alexey Vitvitsky/Xinhua)

A visitor takes photos of flowers during the 42nd Royal Rose Exhibition at Royal Lazienki Park in Warsaw, Poland, on Aug. 21, 2026. The exhibition is held from Aug. 21 to 23 at Royal Lazienki Park, showcasing roses and floral arrangements from around the world. (Photo by Alexey Vitvitsky/Xinhua)

Roses are pictured during the 42nd Royal Rose Exhibition at Royal Lazienki Park in Warsaw, Poland, on Aug. 21, 2026. The exhibition is held from Aug. 21 to 23 at Royal Lazienki Park, showcasing roses and floral arrangements from around the world. (Photo by Alexey Vitvitsky/Xinhua)

A visitor sniffs roses during the 42nd Royal Rose Exhibition at Royal Lazienki Park in Warsaw, Poland, on Aug. 21, 2026. The ongoing exhibition is held from Aug. 21 to 23 at Royal Lazienki Park, showcasing roses and floral arrangements from around the world. (Photo by Alexey Vitvitsky/Xinhua)