On April 19, 2004 (Lunar Calendar March 1, 2004), the Long March 2 rocket successfully sent the "Naster 1" satellite into space.On April 19, 2004, China in the Zhejiang Satellite Launch Center with the "Long March 2" C carrier rocket, successfully sent China's first transmission stereo mapping small satellite - "Test Satellite 1" and China's first self-developed nano-satellite - "Naster 1" scientific experiment small satellite into space, which marks a significant breakthrough in China's small satellite development technology.