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The character 銅 (copper/bronze) evolved from ancient pictographs representing metalworking. The left component 金 (metal/gold) indicates its metallic nature, while the right component 同 (same/together) likely serves as a phonetic indicator. In ancient China, copper was one of the earliest metals used, primarily for casting ritual vessels, coins, and tools during the Bronze Age. The character reflects the importance of metal craftsmanship in early Chinese civilization, where copper and bronze objects were essential for both practical use and ceremonial purposes. Arrived in Japan: The character 銅 arrived in Japan during the Yayoi period (approximately 300 BCE - 300 CE), when metalworking technology and Chinese characters were introduced to Japan through cultural exchanges with the Korean peninsula and China. This period is named after the Yayoi district in Tokyo where bronze artifacts were first discovered, indicating the beginning of metal culture in Japan.