Li Lin's grandfather, an archaeologist who is always busy with work, suddenly came back from abroad after nearly half a year of scientific research work. The items he brought back with him included a strange cultural relic, two full of Aztec Stone carvings with civilized characteristics. Curious Li Lin was attracted by the stone carvings. In the early morning of the next day, he secretly brought a part of it to school and showed it to the other three companions of the expedition team. But when Li Lin put it away, an accident happened. After the strong light, the cultural relics disappeared, and everything in front of the children was magnified, or... they shrunk. The legs of the desks and chairs in the classroom were like a forest of giant trees reaching to the sky, the gaps between the tiles were like ravines that had just been plowed, and the ceiling as far away as the sky—