I'm an assistant research professor at Steward Observatory, the University of Arizona. I'm working on high-redshift (z > 6.5) quasar surveys, the growth of the early supermassive black holes, black hole-host co-evolution, and the reionization history. Our survey has yielded the largest reionization-era quasar sample including three most distant quasars known at z > 7.5. I am leading JWST-ALMA programs to deeply investigate these distant systems.