This photo taken with a mobile phone shows a hot air balloon in Stockholm, Sweden on July 27, 2025. (Xinhua/Dai Tianfang)

This photo taken on July 27, 2025 shows a street view in Stockholm, Sweden. (Xinhua/Peng Ziyang)

This photo taken on July 27, 2025 shows a city view in Stockholm, Sweden. (Xinhua/Peng Ziyang)