A new Earth observation satellite, Gaofen-7, is launched on a Long March-4B rocket from the Taiyuan Satellite Launch Center in north China's Shanxi Province, Nov. 3, 2019. The Gaofen-7, China's first civil-use optical transmission three-dimensional surveying and mapping satellite that reaches the sub-meter level, will play an important role in land surveying and mapping, urban and rural construction and statistical investigation, according to the China National Space Administration (CNSA). (Photo by Sun Gongming/Xinhua)