I am a PhD candidate in the Astronomy Department at the California Institute of Technology. I work with Chuck Steidel to study the circumgalactic medium of redshift-2 galaxies. I am heavily involved in the Keck Baryonic Structure Survey, a spectroscopic survey targeting redshift-2 to 3 galaxies using the Keck telescopes. To learn more about my current and past research, please check the research page.

I was born in Shijiazhuang, China, became an amateur astronomer in high school, and got my B.S. in Astronomy at Peking University in Beijing. In Chinese characters, my name stands for sunshine (昱; yù), and light (光; guāng). Here is my curriculum vitae.

As a frequent volunteer of the Caltech Astronomy Outreach events, I often involve in the general management and oversee the lectures and stargazings. I am also managing the Cahill Rooftop Observatory, an amateur-level observatory serving the Caltech community. In my spare time, I am a photographer and an enthusiast of classical music.