Kun XU, who graduated from School of Astronomy and Space Sciences, Nanjing University (NJU) at 2020, is a postdoctor in School of Astronomy and Space Sciences, University of Chinese Academy of Sciences (UCAS). Kun major in high-energy astrophysics and timing astronomy, and have published two papers in ApJ. He is interesting in accretion theory and spin evolution of neutron stars, star evolution theory, population synthesis, optical observation and progenitor evolution of supernova.