This is the basic principle of how a steam engine works. Try it with your children.
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![[Insanity] What is the experience of grinding bones to jade? Even more moist than white jade!](https://pic.bstarstatic.com/ugc/816577d6481fdac90b00498f97b05a7f.jpg@320w_180h_1e_1c_90q.webp)
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