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The character 買 (buy) evolved from ancient pictographs showing a net (罒) over shells (貝), representing the concept of commercial exchange. In ancient China, shells were used as currency, so the character originally depicted using a net to gather or exchange valuable shells. Over time, the composition stabilized into the modern form with the net radical above the shell radical, maintaining its core meaning of purchasing or trading. Arrived in Japan: The character 買 likely arrived in Japan during the 5th-6th centuries CE, when the Japanese writing system was being developed and Chinese characters (kanji) were systematically imported along with Buddhism, Confucian texts, and other elements of Chinese culture.