Photo taken on Aug. 23, 2018 shows Milu deers at the Nanhaizi Milu Park in the Daxing District of Beijing, capital of China. Milu, also known as Pere David's deer, is a species endemic to China. It was regularly hunted and almost went extinct by the loss of habitat in the early 20th Century. In the 1980s, the species were reintroduced to China from Britain, starting the revival of the population in its homeland. Beijing's Daxing District is home to China's first Milu nature reserve, the Nanhaizi Milu Park. In the past three decades, the Beijing Milu Ecological Research Center sent 497 Milu deer to nature reserves around China and boosted the population outside its natural habitat to 1,800. (Xinhua/Li Xin)