In the library, there are many ordinary guests who come to the library after hearing the news, and even some people try to open the wooden box with brute force like my uncle. In the end, all of them are stabbed.


    It seems to be the idea of the owner of the mechanism box. Except for those Kidd fans, most people can come in and visit.


    "As you can see," Jiro Ji explained, "the box is directly on the table. There is no special guard. Anyone can touch it freely as long as they are in this library."


    "What if someone runs away with the box?" Xiao Lan doubts.


    "There''s no need to worry about that. Just turn on the mechanism, and the weight sensor buried in the floor under the table will be activated," Mr. Jiro demonstrated. "Even if the weight in is only one gram lighter than that when you go out..."


    Bang Dang!


    Jiro just stepped out of the floor and was covered by the cage falling from above. He pressed the button again to let the cage rise.


    It looks like a bluff, but it''s an old trick. I haven''t caught Kidd before


    Gao Cheng thinks in the back.


    What if someone farts when they leave?


    "Ha ha," said old Ji Langji triumphantly, "how about it? Even if there is a way to escape from the cage, there is no way to escape from the library. All the entrances here are equipped with iron gates, which will be triggered together with the cage,


    Even if Kidd stealthily opens the box and takes the gem, it will soon be found out! "


    "There''s no way to open this box secretly," the old lady shook her head. "When opening the box, the music box inside will automatically play melody. I heard the sound of the music box several times in the middle of the night, and then I found that my husband opened the box in the study..."


    Xiaolan asked curiously, "what is the melody?"


    "Well," sighed the old lady, "it''s been more than ten years since my husband opened the box last time. I can''t remember it. It''s like a very famous nursery rhyme."


    Conan looked at the wooden box and thought. He whispered to Gao Cheng: "it seems that he wants to open the box anyway, even with the help of Kidd''s ability... Do you think that guy has already sneaked in? After all, the guard is so lax that there''s no reason why the guy doesn''t come to the spot. "


    "Whatever."


    Gao Cheng stares at the mechanism box.


    He doesn''t care what kind of Kidd is. Unlike Conan, he has no sense of confrontation with an old enemy. He only has the labels of "tool man" and "fat sheep" in his mind.


    I can''t help it. I know Kidd''s real identity from the beginning. There''s no mystery at all. That guy is a joker.


    And then


    Gao Chengyu swept Xiaolan.


    Although I don''t care much, it''s impossible to turn a blind eye.


    From just now on, he felt that the height of Xiaolan in front of him was not right. If there was no accident, it was Kidd.


    Different from his camouflage card, no matter how superb the camouflage ability is, it can''t be absolutely perfect. Although Kidd is top-notch in women''s clothing, this time Xiaolan doesn''t wear high heels, and her clothes are thin. No matter how hard she tries, her height can''t match.


    There are so many people who can disguise. This guy chose Xiaolan. Is it gone with the wind?


    "Isn''t there a piece of paper that says how to open the mechanism box?" Gao Cheng turned to the old lady and asked, "in this case, you can open it according to the instructions?"


    "Yes, there is an explanation, but I don''t know where it is."


    The old lady said quietly.


    "In the middle of the night that day, after my husband closed the box, he put a description drawing of the mechanism box with arrows and numbers in a book,


    Two days later, I went to my study to look for the paper and wanted to know which book was sandwiched in. However, my husband saw it and said that I couldn''t find it. He really hasn''t found it until now. "


    "And the books?" Asked Uncle Maori.


    He can''t be so hard to find


    "They''ve all been given to me," said Jiro Ji, who led the crowd into a separate library nearby. "I''ll put them all here."


    The library is not big, but it is surrounded by towering bookshelves full of books. The highest part needs two indoor scaffolds to get it, which is a match for Kudo''s study.


    "Are these all?"


    The party was completely shocked.


    "Roughly, there must be 10000 books, right? When can we find it like this? "


    "Mr. Maori," Jiro Ji asked his uncle, "how do you think it''s better to start looking?"


    "I can''t help it. I have to look for it one by one..."


    "Before that, I mobilized all the staff and searched here all day, but I didn''t find that piece of paper."


    "Well."


    Uncle froze, feel a little face, just say the words, there is no better way.


    "Of course, after all, there are tens of thousands of books. It''s impossible to turn over every page quickly," Jiro Ji said in a deep voice. "But if you put a piece of paper in the book, you should see that page at once when you turn the book."


    "Well," the uncle felt a little difficult, "it''s true, that''s right... Did he hide in other places after that?"


    "No," the old man denied, "my husband died in a traffic accident the other day. He couldn''t have anticipated that and changed the place where he hid the paper,


    And every time I go out and come back, he will say, "it seems that the box has not been opened, because the piece of paper is still in the old place... Sure enough, is this too difficult for you? But if you really want to read it, I can tell you which book that paper is in... "


    That''s what he said, but it''s really frustrating. It''s like I can''t find it. I didn''t ask him. I always wanted to find it myself. "


    Gao Cheng is half blind.


    The old couple really have a way.


    "It''s very strange. If there is a Moonstone in the mechanism box, is it necessary for your husband to hide it for fear that you will find it?"


    "My husband is rather shy, maybe there is..."


    "What else?"


    "I don''t know, so I want to open it." The old lady faltered.


    Gao Cheng didn''t ask. Anyway, it''s probably the couple''s personal belongings.


    Now it''s important to find out the instruction manual of the mechanism box in tens of thousands of books in this library. Anyway, it''s impossible for him to crack that mechanism box. The entry-level mechanism skill is far from perfect.


    The key clue is that the old lady can''t find


    "I said," Uncle Maori grabbed the old lady and asked, "that piece of paper should be in the books you don''t usually read, madam?"


    "Probably," the old lady recalled carefully, "there are books I won''t read. There are mystery novels that can kill people, and fantasy novels of all kinds of terrible monsters..."


    Gao Cheng looks at uncle in the back.


    OK, mystery and fantasy are excluded.


    If the old lady doesn''t know the secret of the explanatory paper, it''s very likely to be included in these books, but it''s impossible after the old lady knows.


    Since the old man is sure that the old lady can''t find it, it means that the paper will be sandwiched in the book that the old lady won''t find.


    Usually do not read the book, the old lady will look for the first time, after all, just looking for notes, do not read the content.


    The most dangerous place is the safest


    If you think so, the old lady should be familiar with that book, but she won''t look for it.


    Uncle Maori and Conan all went to the bathroom. The few people who stayed in the library didn''t want to help them. Instead, they read their favorite books.


    Gao Cheng''s eyes swept "Xiaolan".


    He didn''t go to the toilet with the garden, but the look of looking for a book was very eye-catching, that is, Conan was not there, otherwise he would see through it immediately.


    Shaking his head, Gao Cheng continued to ask the old lady, "what book are you most familiar with?"


    "The most familiar book?" Old lady Leng way, "I actually don''t read much, but my husband is to like cooking I bought a lot of cookbooks."


    The second Lang Ji old man is surprised to see toward Gao Cheng, even "Xiao Lan" also stopped the action on the hand.


    "What''s wrong with the cookbook?"


    "Tens of thousands of books are too many to narrow down."


    Gao Cheng put a pile of cookbooks on the table, but didn''t read them immediately. He just said with a smile.


    "The first thing to be sure is that even if you read all the books, you can''t find the instruction note in the folder. That is to say, the paper needs to be searched one page at a time,


    But if you can find it page by page, the old man is not so sure that his wife can''t find it,


    There is only one reason, that is, the more familiar the books are, the less she thinks it will be the place where the old man hides the notes. "


    The old lady looked a little confused: "however, I have read all these cookbooks carefully every word in my daily life..."


    "Do you really read every page?" Gao Cheng asked.


    "This..." the old lady hesitated.


    Of course, some dishes that you can cook will not be specially watched.


    "Well," Gao Cheng said, picking up a cooking book, "which dishes in these cooking books are very good before your husband hid the note, but you won''t read them in the future?"


    "Maybe," the old lady thought, "my best dish is potato stew, because he likes it very much, so my mother-in-law taught me to cook it herself."


    "Take another look at the potato stew."


    Gao Cheng starts to read cookbooks.


    He didn''t know what he couldn''t find, but he couldn''t do it.


    It''s just a little trick.


    The principle is that the edges of the paper are not even. If the edges of several pages are cut off, when you turn the book with your fingers, the shortened pages will turn over automatically, forming a hidden effect.


    It''s a way to either stick two pages together.


    "Yes, stewed potatoes."


    Old man zilangji was surprised to take a cooking book and unfolded one of its pages. As expected, there was a manual of the mechanism box“ It''s amazing that it''s really here! Ha ha, it''s still detective Chenghu“ Bang The light in the room went out suddenly and fell into darkness for a moment“ Huh? Is there a power cut? "“ Is that Kidd? " Conan and uncle Maori just came back, and there was some confusion in the dark“ What''s going on? Have you found the manual yet? " Uncle heard jilongji praise Gao Cheng outside, his face was ugly, so he went to the bathroom, too much“ It''s not the time to say that, "old man jironji yelled at his men." Hey, what are you doing? Restore the lighting quickly In the dark library hall came a melodious music box, which attracted people''s attention, and then there was the sound of anti-theft cage falling. Conan and uncle rush back to the hall, but Gao Cheng doesn''t keep up. He just turns on his watch and flashlight. As expected, he can''t find Xiaolan. He didn''t think Kidd really opened the box. Because the melody of the music box in the dark is obviously not right. The melody is the ancient clock created by American Henry Walker in 1876, which was only introduced to Japan in 1940. At the end of the shogunate period, yoshihihizumi''s right guard gate was never heard of. Kidd doesn''t seem to know enough about music. What''s more strange is why we chose this time to do it. It''s clear that the manual of the mechanism box has just been found“ What''s in the box I''ve got... Kidd When the lighting in the museum was restored, the uncle who rushed to the hall first exclaimed, and the old man jilangji was stunned“ Did you open the mechanism box of sanshuiji right guard gate in such a short time in the dark“ How is that possible? " Gao Cheng looks at the Kidd card on the mechanism box and says nothing“ That guy just can''t afford to lose. "“ "Ha?"