Photo taken on Dec. 14, 2023 shows the construction site of China's first concrete-face rock-fill dam, the Yangqu Dam Hydropower Plant in Hainan Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo: China News Service/Qi Zengpei)

Photo taken on Dec. 14, 2023 shows the construction site of China's first concrete-face rock-fill dam, the Yangqu Dam Hydropower Plant in Hainan Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo: China News Service/Qi Zengpei)

Photo taken on Dec. 14, 2023 shows the construction site of China's first concrete-face rock-fill dam, the Yangqu Dam Hydropower Plant in Hainan Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo: China News Service/Qi Zengpei)