Photo taken on May 21, 2019 shows thawing ice at the Nianbaoyuze Mountain Scenic Resort in Jiuzhi County of the Tibetan Autonomous Prefecture of Golog in northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Photo taken on May 21, 2019 shows the scenery of the Nianbaoyuze Mountain Scenic Resort in Jiuzhi County of the Tibetan Autonomous Prefecture of Golog in northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Aerial photo taken on May 21, 2019 shows the scenery of the Nianbaoyuze Mountain Scenic Resort in Jiuzhi County of the Tibetan Autonomous Prefecture of Golog in northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Photo taken on May 21, 2019 shows the scenery of the Nianbaoyuze Mountain Scenic Resort in Jiuzhi County of the Tibetan Autonomous Prefecture of Golog in northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Aerial photo taken on May 21, 2019 shows the scenery of the Nianbaoyuze Mountain Scenic Resort in Jiuzhi County of the Tibetan Autonomous Prefecture of Golog in northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Photo taken on May 21, 2019 shows the scenery of the Nianbaoyuze Mountain Scenic Resort in Jiuzhi County of the Tibetan Autonomous Prefecture of Golog in northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Aerial photo taken on May 21, 2019 shows the scenery of the Nianbaoyuze Mountain Scenic Resort in Jiuzhi County of the Tibetan Autonomous Prefecture of Golog in northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Photo taken on May 21, 2019 shows the scenery of the Nianbaoyuze Mountain Scenic Resort in Jiuzhi County of the Tibetan Autonomous Prefecture of Golog in northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)

Photo taken on May 21, 2019 shows Przewalskii's naked carps, a species endemic to the Qinghai Lake basin, at the Nianbaoyuze Mountain Scenic Resort in Jiuzhi County of the Tibetan Autonomous Prefecture of Golog in northwest China's Qinghai Province. (Xinhua/Zhang Hongxiang)