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What will happen to Tian Huangshi's long play?

Form a layer of verdigris.

Tian Huangshi's long-term playing will form a natural luster on the surface of cultural relics, which is patina and an oxide layer formed by long-term oxidation. The patina can resist the unfavorable factors in the surrounding environment, make Tian Huangshi relatively stable and protect Tian Huangshi.