Aerial photo taken on Aug. 31, 2019 shows the Qingtu Lake in Minqin County of Wuwei City, northwest China's Gansu Province. Qingtu Lake is located in the lower reaches of the Shiyang River in Minqin County, where China's deserts the Badain Jaran and Tengger meet. Qingtu Lake reached a size of 26.7 square kilometers by now, though the lake had been dry for around 50 years until 2010. (Xinhua/Nie Jianjiang)