At first, I only wrote functions and used them in Jupyter, but I gradually got tired of the code duplication and the maintenance, so I wandered around, and then I learned about classes, so I applied classes somehow, and then I learned about asyncio, so I listened to the lecture while wandering around trying to use it somehow. I thought that asyncio was the only answer because it only shows what I know, but after listening to the lecture, I think I can write it while considering blocking, nonblocking, IObound, and CPUbound and mixing them appropriately. When I study alone, I always wander around without knowing the core and just think, "It's like this," but after listening to the lecture, I learned the core, and now I'm ready to add more flesh to it. Thank you so much for the lecture. I'll really code well based on what you taught me. Thank you!!