Some will have spent the millennia in direct contact with the earth and underground moisture, while others were enclosed in dark, dank tombs. It would be unusual for such bronzes to emerge unblemished.
由於長期與土壤和地下水直接接觸，部分則封存在陰濕墓穴裡，器面上難免生成各式各樣的鏽蝕物。