Old houses in Huangshan, Anhui province, offer a unique insight into the centuries-old architecture of the Ming and Qing dynasties, but a lack of funding is making protection a challenge.

There are more than 6,000 Ming and Qing houses in Huangshan, a UNESCO cultural and natural heritage site; but, because of limited government funding, fewer than one-fourth - 1,325 - are under State protection.