Walking into the Old Library of Trinity College is like a sudden fall into a parallel world of solidified time. The most important of the nearly 200,000 books is the Irish national treasure Kyle. This hand-painted 8th-century gold-gold decorative book is too precious to be stored in a glass cabinet in the middle of a dimly lit exhibition room. Walking on the second floor, when the Long Room appears in front of you, you will feel the strong visual impact in a moment - soft and dim light, neat and tall bookshelves, the spine of the years, The arched oak dome reminds people of the Hogwarts School of Magic in Harry Potter. In such a huge space, there are more than 30 rows of high-rise bookshelves neatly arranged on two sides, each with different letters as indexes. Although these ancient books can't be easily touched, they can also feel the solemn and quiet atmosphere and the mysterious magical color, as if they are caught in a dream that they don't want to wake up...