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When Xi'an Terracotta Army was discovered in 1974, this enormous sculpture group amazed the world. About 8,000 warriors, 100 chariots, 400 horses, and more than 100,000 weapons have been unearthed. It was the 8th wonder of the world and became a UNESCO world heritage site in 1987. No two warriors are alike, the figures were originally painted in bright colors, including scarlet, green, black, and purple. The moist environment underground was more suited to the preservation of the paint. Once the figures were excavated, the change of the humidity led to more cracks and warping on the surface, and is the main factor resulting in the fading of the colors.
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