梦溪笔谈

mèng xī bǐ tánmengxibitan

Dream Pool Essays by Shen Kuo 沈括[Shen3 Kuo4], book on various fields of knowledge, the first to describe the magnetic needle compass

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Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences