Zhao Yi was to attend a space conference organized by the National Space Administration, or to be precise, by its subordinate Lunar Exploration and Aerospace Engineering Center.
The Lunar Exploration and Aerospace Engineering Center, as the name suggests, is responsible for aerospace engineering and lunar exploration projects and is the core of the Aerospace Bureau's technical and operational efforts.
Actually, the Lunar Exploration and Aerospace Engineering Center is a new department, established only about ten years ago when the Aerospace Bureau set the direction for lunar exploration and created a dedicated lunar and aerospace department to handle related affairs.