On April 15, the light boat test spacecraft (White Elephant) independently developed by the Institute of Micro Satellite Innovation of the Chinese Academy of Sciences released the first batch of scientific and engineering test results in Shanghai. According to Chang Liang, director of the General Research Institute of Micro and Nano Satellites of the Institute of Micro and Nano Satellites of the Chinese Academy of Sciences and chief designer of the light boat cargo spaceship, the light boat test spaceship was successfully launched into orbit on March 30 with the Lijian 2 Yaoyi carrier rocket. The whole ship weighs 4.2 tons and carries 1 ton of scientific test load. It has the ability to fly in orbit for three years. This test flight revolves around three aspects: key technology verification, low-cost design and exploration, and expansion tasks, successfully achieving the established goals and laying a solid foundation for the subsequent prototype development of light cargo spacecraft. At present, the spacecraft has successfully completed flight control testing, actively lifted to a 600 kilometer orbit, and officially entered the long-term operation phase. It is carrying out key technology verification, stability and expansion test tasks for the flight platform in an orderly manner. The light boat experimental spacecraft has achieved multiple breakthroughs in key platform technologies. The spacecraft adopts new technologies and processes to design the sealing section, propulsion system, laser IMU, thermal control and environmental control system and products, and carries out core designs such as autonomous approach and safe evacuation of large inertia spacecraft, long-term residency capability, distributed comprehensive shipping, and expandable capacity energy system. While ensuring system reliability, it reduces research and development costs, provides technical, research and launch process verification support for the official flight of light cargo spacecraft, and assists in rapid technological iteration and upgrading. Low cost design and exploration have achieved significant results, opening up a new path for reducing costs and increasing efficiency in aerospace. In terms of energy, foldable ultra-thin flexible monocrystalline silicon solar cells exhibit stable performance in orbit, with a cost only one tenth that of traditional cells; In the field of communication, the new system's air-to-air communication module has excellent performance and can achieve data transmission of over 450 kilometers; The application of 3D printing technology and new materials effectively reduces costs and shortens manufacturing cycles, fully verifying the in orbit applicability and reliability of low-cost components. The expansion tasks such as multi satellite release and in orbit services have been successfully completed. On April 2nd and 3rd, the Qingzhou experimental spacecraft successfully released two small satellites and conducted long-distance approach and safe evacuation tests with the New Voyage 01 satellite, verifying the practicality of multi-body attitude and orbit coupling control technology. Its universal loading platform realizes the "plug and play" load, and has completed 6 new technology load tests, achieving good results in multiple tests such as active vibration isolation and metal in orbit manufacturing, filling multiple related technical gaps. (New Society)