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Chemical reactions between cultural relics explosed to the atmosphere and aerialsubstances will lead to the deterioation of the relics. The aim of this paper is to relatethe deterioration rate of cultural relics to environmental conditions. Samples and Measurements Samples were colleted from the stone carving and stony city wall built up in the MingDynasty about 600 years ago in the eastern part -- a scenic spot and the southern part