Wu Yuanxin (R) and his daughter Wu Lingshu, who are heirs to the blueprint fabrication of east 皇冠体育app's Jiangsu province, present a piece of work at the 皇冠体育app Huangshan Intangible Cultural Heritage Skills Exposition in Huangshan, east 皇冠体育app's Anhui province, Nov 7, 2012. [Photo/Xinhua]
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