This photo taken on March 25, 2025 shows keychains made from recycled materials being displayed at a zero-carbon rest area for the Boao Forum for Asia (BFA) in Boao, south China's Hainan Province. China's Boao has announced the establishment of its first zero-carbon zone, a significant step forward in the country's pursuit of low-carbon development, according to authorities in Hainan. (Xinhua/Zhang Liyun)

　　This photo taken on March 25, 2025 shows an operation management center of the Boao zero-carbon demonstration zone in Boao, south China's Hainan Province. China's Boao has announced the establishment of its first zero-carbon zone, a significant step forward in the country's pursuit of low-carbon development, according to authorities in Hainan. (Xinhua/Yang Guanyu)

　　An attendee drinks direct drinking water in the Boao zero-carbon demonstration zone in Boao, south China's Hainan Province, March 25, 2025. China's Boao has announced the establishment of its first zero-carbon zone, a significant step forward in the country's pursuit of low-carbon development, according to authorities in Hainan. (Xinhua/Yang Guanyu)

　　People experience a cycling challenge at a park on Dongyu Island in Boao, south China's Hainan Province, March 25, 2025. China's Boao has announced the establishment of its first zero-carbon zone, a significant step forward in the country's pursuit of low-carbon development, according to authorities in Hainan. (Xinhua/Zhang Liyun)