Introduction to Youyu Bookstore: Youyu Bookstore is one of the two study rooms in the garden. It is a self-contained independent courtyard. There are several lake stones in the front yard, scattered flowers and trees, and classic ancient books indoors. The fragrance of books is flowing. It is really a place to concentrate on studying. The "secret place of cultivation". In the quiet and beautiful environment of Yanjia Garden, buildings such as Youyu Bookstore are located in a corner, which is quiet and beautiful, with a secluded atmosphere.