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Family name Rxin (Rxin) , all around the world, is an extremely rare last name.
儿心, 儿新, 儿欣, 尔信, 尔心, 尔忻, 尔新, 尔昕, 尔欣, 尔歆, 尔芯, 尔辛, 尔鑫, and 尔馨