Sika deer are seen in a meadow at the foot of Qilian Mountain in Qilian County of Haibei Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Oct. 6, 2017. More than 2,000 semi-wild red deer and sika deer were raised in a deer base here with an area of over 4,000 hectares.(Xinhua/Hou Deqiang)