translation.en: And he created this physical model in order to demonstrate that you could, in fact, create patterns in rocks, or at least, in this case, in mud, that looked a lot like mountains if you compressed them from the side.
translation.zh: 他建造了这个实物模型， 用来证明你事实上能在石头上， 或至少像这样在泥土上制造 山石那样的纹路， 只需要从侧面挤压它们。