Hilbert's Wonderful Museum

[60% Hard science fiction + 30% jokes + 10% unspeakable] "I" mistakenly entered a magical museum. There was an idle administrator, a curator who did not want to be named, and a little girl who wanted to blow up the museum. The secrets in each of them were related to this museum. The magic of this museum is that every collection placed in it will disappear in reality, and people will also lose the memory of its existence. In other words, every collection is a key to a parallel world. Some collections are human inventions, while others are foreign products. On the surface, the collections appear to be imprisoned in museums because they have caused great trouble in the real world. But after a closer look, you will find that the collections themselves are not absolutely good or bad. What matters is how people use them.