It has serious damage from corrosion, but the museum will not take any special steps unless the damage starts getting worse. This is an example of the "less is better" approach. Tinker with things a bit less, but love them the more for their weathered antiquity.
例如屬西周早期的銅器（禮器）《矢令方尊》已有兩千多年歷史，鏽蝕嚴重，但若不繼續惡化則不做處理，這就是古物修護的原則「少即是多」──少做一點，但多愛一點它的滄桑、它的古老。