杭州图书馆成立于 1958 年，是国家一级图书馆。其老馆在浣纱路，2008 年 10 月新馆在钱江新城落成。作为国内公共图书馆的标杆，杭图以「平民图书馆，市民大书房」为理念，2003 年率先实行免证阅览，2006 年全面免费开放，并取消借书证押金制度，推动「无差别借阅」，任何人进杭州图书馆借阅书籍都不需要证件和费用（外借除外）。
进入图书馆阅读只需要安检，无须证件、无须注册（不过最好还是带上证件备用），开馆时间为 9:00-21:00（周二至周日）。
Established in 1958, Hangzhou Library is a nationally accredited first-class library. Its original building is located on Huansha Road, while the new facility opened in Qianjiang New Town in October 2008. As a benchmark for public libraries in China, it operates under the philosophy of "a library for all, a grand study for citizens." In 2003, it pioneered card-free reading access, followed by complete fee-free admission in 2006 when it abolished deposit requirements for borrowing cards, promoting "barrier-free reading" where anyone can access its collections without credentials or fees (excluding external loans).
Entry only requires security screening—no registration or documents needed (though carrying ID as backup is advisable). Operating hours are 9:00-21:00 (Tuesday through Sunday).
该地理藏宝已获得场地管理方授权，请安心寻宝并遵守图书馆内的规则。
This geocache is placed with explicit permission from the manager. Enjoy your search responsibly and follow local guidelines.
在图书馆内请保持安静
Please always keep quiet and silence
宝藏在图书馆馆内。你需要先找到谜题第一步的答案，然后再去图书馆周围找到相应的线索，并根据指示来到正确的地方，才能找到最后的宝藏！
第一步：找到与本谜题有关的书，其中只有一本是杭州图书馆「文献借阅中心」的馆藏。记录下这本书的 ISBN 的第一、二位数字和最后一位数字，分别记为 X、Y 和 Z。
第二步：前往坐标 N 30° 14.91X′ E 120° 12.16Y′，在附近找到红圈标记的数字，计算该数字各位之和作为 S。
第三步：进入杭州图书馆，前往「文献借阅中心」，找到这本书 应该 所在的书架排，确定该书架排的具体面（如 A 面或 B 面）；如果无法确定具体哪一面（即该书可能出现在多个面），则选择 A 面。记录下这个书架排序号的最后一位数字，记为 T。
第四步：宝藏就在你找到的这个书架排的这个面上，第 Z 个书架单元的第 S+T 层。开始搜索吧！
The treasure is hidden inside the library. First, you need to find the answer to the first step of the puzzle, then locate the corresponding clue in the library, and follow the instructions to reach the final treasure!
Step 1: Find the books related to this puzzle. Only one of these books is part of the Hangzhou Library's "Circulation Center" collection. Record the first two digits and the last digit of the book's ISBN as X, Y, and Z.
Step 2: Go to the coordinates N 30° 14.91X′ E 120° 12.16Y′ and locate the number marked with a red circle nearby. Calculate the sum of its digits as S.
Step 3: Enter the Hangzhou Library and go to the "Circulation Center." Find the shelf where the book should be placed, and determine the side of that shelf (e.g., Side A or Side B). If the exact side cannot be determined (i.e., the book could appear on multiple sides), choose Side A. Record the last digit of that shelf's number as T.
Step 4: The treasure is hidden on this side of the shelf row, on the Z-th shelf unit, on the (S+T)-th level. Good luck!
（可选）你也可以在图书馆内，通过解决一道新的谜题，获取第一步的提示：
(Optional) You can also get a hint for the first step by solving a new puzzle in the library:
