On May 23, 2025, an latest research achievement by Chinese scientists was published online in the international academic journal “Science”. The research team from the National Astronomical Observatories of the Chinese Academy of Sciences discovered a rare millisecond pulsar by China's Five-hundred-meter Aperture Spherical Telescope (FAST). It orbits with its companion star in a period of 3.6 hours, and is eclipsed by the companion star for one-sixth of the time (i.e., an eclipse, similar to a solar or lunar eclipse). This discovery is of great significance for the study of stellar evolution theory, compact star accretion physics, and the gravitational wave source of binary mergers .