The Nordic Four (14) visit to the Royal Swedish Library was another winter rain, which did not land at dawn. Because of my depression, I ignored its cold, transferred from the Viking cruise to the bus, went straight to Stockholm, the Swedish capital, for more than two hours, and unexpectedly arranged shopping. This travel friendly elephant especially likes to spend money. Of course, I don't want to accompany the prince to read, and I asked about a Royal Library nearby that I could go in at will. So I came from my heart and silently recited "the world's hundreds of years old home, nothing more than Jide; the first good thing in the world, or reading". The Royal Swedish Library is one of the top ten international libraries, which is both the national library and the research library of the humanities. The source of the Royal Library's collection is the collection of the King of Vasa in 1520. The Royal Library's collections developed over the decades after 1620. This was certainly not for the fee. It turned out that Sweden was actually a United Kingdom of many countries, including now Norway, Sweden, and Finland. So it was the Nordic power that was rightfully the cause of its conquest, which extended to northern Germany and Poland, and was crowned the Polish throne at its most glorious time. History does not have a reward, but only an organic take advantage. As a result, books flooded from the Baltic Sea, Poland, Germany, Bohemia, Moravia, Denmark to Sweden as loot, enriching the collection of the Royal Library. With down jackets and bags in storage, I talked with a professor at the Royal Institute of Technology, Caroline, who came to the cafe to find information with my translator. Professor Caroline, of the elegant temperament, told me that the practice of storing coats and bags was mainly due to safety concerns. In 1697, the Royal Library lost 17,386 volumes of books and 1,103 manuscripts due to the fire at the Palace, which was an immeasurable loss. According to the King's Royal Order of 1713, the library was open to visitors regularly but not to borrow. It has been more than a century since the library was allowed to borrow, except for the preservation of the book, and began to play a public library role. Professor Caroline has listed a large number of figures to illustrate the status of the Royal Library. She said that the museum's collection currently has more than 20 million pieces, rough statistics of books and magazines 3 million volumes, 22,000 kinds of current publications, 65,000 manuscripts, 1,500 rolls of cradle magazines, 170,000 maps, portrait pictures and other 500,000 pieces, 15,000 book tickets, and more than seven million hours of audio and video collection. I also learned through the curator that the library's collection is open to everyone, but its work is mainly aimed at scientific research institutions, and its collection materials cannot be borrowed, but must be studied in the library. Most of the materials are stored in the warehouse and need to be approved for inspection. Except for the passport, I have no other documents to prove my identity. I want to visit the Chinese collection of the Royal Library, but I can't do it. Fortunately, the museum agreed to let me take pictures. After taking a few pictures, I crept out the down jacket and bag to go to the team. In my opinion, the most precious collection in the Royal Swedish Library, although the number of sands in the Ganges, is such an unverified Latin handwritten copy of the "Th Devil's Bible", which includes the Old Testament, the New Testament, Jewish history, and Bohemian chronicles. It is 49cm wide and weighs 75kg, and is written with 160 donkey skins. It is just one of the National Treasures of the Royal Library.