People participate in the Solar Boat Challenge 2025 held on Lake Balaton in Balatonalmadi, Hungary, on Aug. 23, 2025. (Photo by Attila Volgyi/Xinhua)
Team members prepare a solar boat for a race during the Solar Boat Challenge 2025 held on Lake Balaton in Balatonalmadi, Hungary, on Aug. 23, 2025. (Photo by Attila Volgyi/Xinhua)
A man participates in the Solar Boat Challenge 2025 held on Lake Balaton in Balatonalmadi, Hungary, on Aug. 23, 2025. (Photo by Attila Volgyi/Xinhua)
A man participates in the Solar Boat Challenge 2025 held on Lake Balaton in Balatonalmadi, Hungary, on Aug. 23, 2025. (Photo by Attila Volgyi/Xinhua)
A man participates in the Solar Boat Challenge 2025 held on Lake Balaton in Balatonalmadi, Hungary, on Aug. 23, 2025. (Photo by Attila Volgyi/Xinhua)
