It wasn't until I enrolled in the class that I realized Senior Gao Shan could explain the theory of Chan so simply, allowing novices to quickly get started [thumbs up]. It gave me a relatively systematic understanding of the basic concepts and applications of the theory of Chan. Of course, just a few days of study is far from enough; in the coming time, I need to repeatedly review and savor it, train in practical situations, and continuously summarize and improve.