Fast Radio Burst Observations in the Telescope-Driven Era

Fast Radio Bursts (FRBs) are among the most enigmatic transients in modern astrophysics. Over the past decade, rapid advances in radio telescopes and large-scale surveys have transformed FRB studies from the discovery of rare events to the routine detection and detailed characterization of thousands of bursts. In particular, the Five-hundred-meter Aperture Spherical radio Telescope (FAST) has played a leading role by providing unprecedented sensitivity. This talk reviews recent observational progress in FRB research, with an emphasis on results from FAST. I will discuss three key questions: Where do FRBs originate? What are the physical conditions of their local environments? How do their signals propagate to us? Observational evidence related to repeating FRBs, magnetar connections, polarization, burst morphology, and multi-wavelength studies will be summarized. I will also highlight how propagation effects provide unique probes of the magneto-ionic environments surrounding FRBs and of the intervening media between the source and the observer.