This aerial photo taken on June 9, 2023 shows the scenery of the Qairhan salt lake in Golmud, northwest China's Qinghai Province. The Qairhan salt lake, with a total area of 5,856 square kilometers, has been the largest potash fertilizer producing base in China. (Xinhua/Zhang Hongxiang)

This aerial photo taken on June 9, 2023 shows the scenery of the Qairhan salt lake in Golmud, northwest China's Qinghai Province. The Qairhan salt lake, with a total area of 5,856 square kilometers, has been the largest potash fertilizer producing base in China. (Xinhua/Han Fangfang)

This aerial panoramic photo taken on June 8, 2023 shows the scenery of the Qairhan salt lake in Golmud, northwest China's Qinghai Province. The Qairhan salt lake, with a total area of 5,856 square kilometers, has been the largest potash fertilizer producing base in China. (Xinhua/Zhang Hongxiang)

This aerial photo taken on June 9, 2023 shows the scenery of the Qairhan salt lake in Golmud, northwest China's Qinghai Province. The Qairhan salt lake, with a total area of 5,856 square kilometers, has been the largest potash fertilizer producing base in China. (Xinhua/Pan Binbin)

This aerial photo taken on June 9, 2023 shows the scenery of the Qairhan salt lake in Golmud, northwest China's Qinghai Province. The Qairhan salt lake, with a total area of 5,856 square kilometers, has been the largest potash fertilizer producing base in China. (Xinhua/Pan Binbin)

This aerial photo taken on June 9, 2023 shows the scenery of the Qairhan salt lake in Golmud, northwest China's Qinghai Province. The Qairhan salt lake, with a total area of 5,856 square kilometers, has been the largest potash fertilizer producing base in China. (Xinhua/Zhang Hongxiang)

This aerial photo taken on June 9, 2023 shows the scenery of the Qairhan salt lake in Golmud, northwest China's Qinghai Province. The Qairhan salt lake, with a total area of 5,856 square kilometers, has been the largest potash fertilizer producing base in China. (Xinhua/Han Fangfang)