每日钉一下（巴菲特是如何投资日股的呢？）

Group 1 - The average returns of enhanced index funds have historically outperformed their corresponding indices in most years [1] - However, there are instances where some funds underperform the index, indicating the importance of careful selection [1] Group 2 - A free course is available that introduces investment methods for selecting excellent enhanced index funds [2] - Interested individuals can obtain this course by adding the "Course Assistant" and replying with "Enhanced Index" [3]