修建始于公元前7世纪，历经数百年之久。
Construction took place over hundreds of years, beginning in the seventh century B.C..
历经数百年挖掘后， 目前已极难寻觅， 故而十分珍贵。
Through years of digging, it is very difficult to be found. So the stone is greatly treasured.
唐卡画家用稀有的矿物和植物制成特殊的颜料，绘制出色彩鲜艳的图画，历经数百年而不褪色。
Thang-ga painters use special pigments made from rare minerals and plants to make bright colors that can last for hundreds of years.
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