The old man who loves reading picture books

The old man in Hungary, Jozsef Tari, loves reading very much. However, he only favors the small and exquisite pocket books. There are more than 4500 collections in his hand, and the oldest one has a history of more than 100 years. The old man also has strict requirements for the size of the books. Those with a length of more than 7.6 cm will be abandoned. It is really lovely to look at these "small books" full of shelves.