This course was the most challenging one for me. I started the lectures in September 2025, and after overcoming various trials over the past five months, I have finally completed the course. I hit a wall with the unfamiliar terminology and considered giving up, and the moment I encountered calculus, I was in despair. However, after repeatedly re-watching each chapter, gradually getting used to the terms, and organizing everything piece by piece in my head and through my notes... I finally made it here! After refining my knowledge a bit more, I plan to dive into the world of deep learning. Thank you for always providing excellent lectures that fuel my desire for new knowledge!