This photo taken on Aug. 20, 2024 shows the Baizha Salt Field at Baizha Township of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province. Located at an altitude of over 4,000 meters, the salt field has a history of salt production for more than a thousand years. (Xinhua/Tang Rufeng)

This photo taken on Aug. 20, 2024 shows the Baizha Salt Field at Baizha Township of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province. Located at an altitude of over 4,000 meters, the salt field has a history of salt production for more than a thousand years. (Xinhua/Tang Rufeng)

An aerial drone photo taken on Aug. 20, 2024 shows the Baizha Salt Field at Baizha Township of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province. Located at an altitude of over 4,000 meters, the salt field has a history of salt production for more than a thousand years. (Xinhua/Tang Rufeng)

An aerial drone photo taken on Aug. 20, 2024 shows the Baizha Salt Field at Baizha Township of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province. Located at an altitude of over 4,000 meters, the salt field has a history of salt production for more than a thousand years. (Xinhua/Tang Rufeng)

This photo taken on Aug. 20, 2024 shows the Baizha Salt Field at Baizha Township of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province. Located at an altitude of over 4,000 meters, the salt field has a history of salt production for more than a thousand years. (Xinhua/Tang Rufeng)