The discovery of a supermassive black hole rapidly suppressing star formation in a massive galaxy at a redshift of 2.445 has significant implications for our understanding of the co-evolution of black holes and their host galaxies in the early universe. This finding suggests that supermassive black holes can play a crucial role in regulating star formation in galaxies, particularly during the rapid quenching phase. The efficient ejection of neutral gas by the black hole indicates a direct link between the black hole's activity and the cessation of star formation in the galaxy. This implies a close connection between the growth of supermassive black holes and the evolution of their host galaxies, highlighting the intricate interplay between these two components in shaping the properties of galaxies in the early universe.