Photo taken on Dec. 22, 2016 shows a telescope projecting red beacon beam at the quantum communication ground station in Lijiang, southwest China's Yunnan Province. The world's first quantum satellite "Micius" was put into use on Wednesday after four-month on-orbit tests. China launched the satellite on Aug. 16, 2016. It is nicknamed "Micius," after a fifth century B.C. Chinese philosopher and scientist. (Xinhua/Jin Liwang)
