n1

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JLPT: N1

School Grade: 3rd (8 years old)

This character is a combination of 巾 cloth and 長 long. Here 長 is a phonetic element expressing spread, giving “long spread cloth,” which then gives “curtain/drape.” It isn’t clear how 帳 came to mean “register,” but it’s possible that records were kept on rolls of cloth before paper became common.