C432 One-word dao heart

After entering the courtyard, he did not see Mister. Han Yan hesitated for a moment before walking directly to a study room that was not far away.

There was a bookshelf in the study, and on it were all kinds of books, from the Four Books and Five Classics to Astronomical Geography. In front of the bookshelf were two long tables made of black wood. In front of the table stood an old man