I am Zhijie Qu, an Assistant Professor at Tsinghua University in Beijing, China. My research focuses on the diffuse gas in the Universe, including the circumgalactic medium, the interstellar medium, and the intergalactic medium. These diffuse gases in and surrounding galaxies are crucial to various substantial topics in galaxy formation and evolution, including galactic feedback, gas accretion, and gas recycling. I specialize in characterizing multiphase diffuse gases using multi-wavelength observational techniques, including UV/optical absorption surveys, optical galaxy surveys, radio HI 21cm observations, X-ray data, and the Sunyaev–Zeldovich effect.

Prior to joining Tsinghua, I was a postdoc researcher at the University of Chicago from 2021 to 2025. I received my Ph.D. degree from the Univeristy of Michigan in 2021 and B.S. degree from the Peking University in Jul. 2015.