I'm sorry for replying late. I think it may have been inconvenient because it was an edited version of a live lecture. So I wrote a lecture outline (https://github.com/ZeroCho/sleact/blob/master/nest-typeorm/README.md) where you can check your progress from time to time on GitHub, and a file that separates the source code by section (ch0, ch1, ch2...). I will actively reflect your feedback in the future. Thank you.