An aerial drone photo taken on March 19, 2025 shows the Boao zero-carbon demonstration zone in the Dongyu Island in Boao Town of Qionghai City, 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)