China's newly-developed heavy-lift carrier rocket Long March-5 blasts off from the Wenchang Space Launch Center in Wenchang, south China's Hainan Province, Nov. 3, 2016. With a Long March-3B rocket putting a new communication satellite into orbit on March 10, 2019, China's Long March carrier rocket series completed 300 launches, having sent more than 500 spacecraft into space since 1970. (Xinhua/Li Gang)