After a period of speculation concerning a planned Chinese launch, it lifted off at 2301 GMT, 8 April 2021 from the Taiyuan Satellite Launch Center. The Long March 4B (CZ-4B) rocket carried the Shiyan 6-03 (Shiyan Weixing 6-03) to a high, 1,000 km, Low Earth Orbit (LEO), sun-synchronous orbit – inclined at 99.5 degrees.
This is the third mission in the series. In the Chinese media it is described as a space environment survey unit, with a “technology test-bed” secondary mission.