If I had taken the course in 2021, I would have given it a 5-star rating. If I had taken the course in 2024, I would have given it a 3-star rating. Advantages 1) A process of understanding why you should use Spring Pros 1) As of 2024, it is inconvenient to take the course because it is not included in the course and you have to set it up separately. 2) I don't know if it is the instructor's habit, but because of the sighing sound every 5 minutes, it reduces concentration.