On August 31, 2019 (August 2, 2019 in the lunar calendar), the Kuaizhou-1A carrier rocket "One Arrow, Two Stars" was successfully launched. At 7:41 on August 31, 2019, my country used the Kuaizhou-1A carrier rocket at the Jiuquan Satellite Launch Center to successfully launch the microgravity technology experimental satellite and the Xiaoxiang-107 satellite in the "one arrow and two stars" approach. In the sky, satellites entered the predetermined orbit. The Kuaizhou-1A launch vehicle is a small solid launch vehicle developed by Aerospace Science and Industry Rocket Technology Co., Ltd., a subsidiary of Aerospace Sanjiang Group of China Aerospace Science and Industry Corporation. It mainly provides launch services for low-orbit small satellites and has high orbital accuracy, short preparation period, and low launch costs. The two satellites launched this time are the microgravity technology experimental satellite developed by the Institute of Microsatellite Innovation of China Academy of Sciences and the Xiaoxiang-107 satellite developed by Changsha Tianyi Space Science and Technology Research Institute Co., Ltd. The Microgravity Technology Experimental Satellite is the first satellite of the strategic pilot science and technology project of the Science (Phase II) of the China Academy of Sciences. It will conduct in-orbit experiments to verify ultra-high precision control and measurement technology under space microgravity conditions. Xiaoxiang-107 satellite is a 6U scientific experimental satellite. In orbit, it mainly verifies key solar sail technologies and provides technical support for subsequent large-scale solar sail research and development. This mission is the third launch of the Kuaizhou-1A carrier rocket.