This photo taken on March 25, 2025 shows a zero-carbon bar in 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/Xie Ziyi)

　　Staff members demonstrate the procedure of plastic recycling 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/Xie Ziyi)

　　This photo taken on March 25, 2025 shows the outdoor photovoltaic floor tiles in 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)