It has been a decade since the first direct detection of gravitational waves, marking a milestone in astrophysics. Between the first (O1) and third (O3) observing runs, nearly 90 compact binary mergers were identified, with over 90% being binary black hole (BBH) systems. The ongoing fourth observing run (O4), which commenced in May 2023 and is scheduled to conclude in October 2025, continues to expand this catalog.

In this talk, I will provide a broad overview of the formation and evolutionary processes of BBHs through gravitational wave emissions, rather than focusing on a specific detailed topic. Additionally, I will briefly introduce some of my research endeavors related to these phenomena.