一片静谧的夜晚，来到了一座古老的图书馆。刘齐和他的朋友走进馆内，目光扫视着，满眼都是层层叠叠的书架，有七层之多。他们本来只是出来逛逛，却意外地发现了这座神秘的图书馆。走近的时候，一位老者不知道从哪里冒了出来，询问着他们两个的身份。

两人彼此瞥了瞥眼，随后，刘齐勇敢地回答道：“我们是出于好奇，想要了解图书馆里面的秘密。”老者淡淡一笑，招呼他们跟着自己，踏上了探索之旅。

一路上，老者讲述着这座图书馆的历史，两人愈发感兴趣。他们来到了图书馆的第七层，看到里面满屋子的书籍，老者突然开口说道：“一定要小心，这里有着很多神秘的书籍，有些可能会带来危险。”

刘齐和他的朋友没有理会老者的提醒，依然翻阅着书籍，很快，他们发现了一本极其神秘的书，上面封存着一张地图。他们激动地拿起地图，发现它指向着一处神秘的山洞。

于是，刘齐和朋友们决定前去探索，一路上他们身处重重危险，最终终于来到了这个山洞。他们惊奇地发现，山洞里竟然有着一座古老的宫殿，而这里的宝藏竟然超乎他们的想象。那么，这宫殿里究竟有什么秘密？

刘齐和朋友们踩着细腻的青石台阶，一步步来到了宫殿门口，手触到金色的大门，轻轻地推开……

一切都没有等到他们的想象，而此时，他们又将会遭遇什么样的危险？故事还将继续，一起跟随刘齐和朋友们，揭开七层楼的秘密！

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