If the book is about Tibet, then devote as much space as possible to discussing Tibetan culture itself; if the subject of the book is Spanish cuisine, then a brief review of the history of the Iberian Peninsula would be a good idea The choice, even though it has nothing to do with food, always shows erudition. A typical conversation would go like this: "Have you read "The Bodhi of the Heart" by Lin Qingxuan?" "Well, his book has a strong flavor of Zen. You know, Zen was founded by the Sixth Patriarch Huineng. Over the years, it has It is even more influential in modern society. I remember Hui Neng’s gatha: “The risk of avoiding the truth is that you have to determine the theme of the book at the first time. Titles of books such as "Six Lectures on Loneliness" and "Yu Dan's Commentary" are easy to understand and easy to judge; but like "The Kite Runner" and "1Q84", it is difficult to imagine the theme based on the title alone, let alone Guess the content.