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In page Feng shui:

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The magnetic compass was used for feng shui since its invention.[11] Traditional feng shui instrumentation consists of the Luopan or the earlier south-pointing spoon (指南針 zhinan zhen)—though a conventional compass could suffice if one understood the differences. Not to be confused with the South-pointing chariot which was used for navigation. A feng shui ruler (a later invention) may also be employed.[citation needed]