An aerial drone photo taken on March 16, 2025 shows the photovoltaic devices on the roof of the Boao Forum for Asia (BFA) International Conference Center and a BFA hotel 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/Pu Xiaoxu)